/* ================================================
   HABITOSGALI - DISEÑO PROFESIONAL
   Un tracker de hábitos moderno y elegante
   Colores y variables de color en: colores.css
   ================================================ */

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Espaciado */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    
    /* Tipografía */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', monospace;
    
    /* Transiciones */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    
    /* Radios - Más sutiles */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;
    --radius-full: 9999px;
}

/* ================================================
   BASE
   ================================================ */

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    padding-bottom: 80px;
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
}

img {
    max-width: 100%;
    display: block;
}

/* ================================================
   LAYOUT
   ================================================ */

.container {
    max-width: 680px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.main-content {
    padding-top: var(--space-4);
    min-height: calc(100vh - 140px);
}

/* ================================================
   HEADER - Minimalista y limpio
   ================================================ */

.top-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 680px;
    margin: 0 auto;
    padding: var(--space-3) var(--space-4);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-left .logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: 600;
    font-size: 18px;
    color: var(--text-primary);
    transition: opacity var(--transition-fast);
}

.header-left .logo:hover {
    opacity: 0.7;
}

.header-left .logo img {
    width: 28px;
    height: 28px;
}

.header-left .logo svg {
    width: 28px;
    height: 28px;
    color: var(--primary);
}

.user-menu {
    position: relative;
}

.user-button {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.user-button:hover {
    background: var(--bg-tertiary);
}

.user-button img,
.user-button .avatar-placeholder {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.user-button .avatar-placeholder {
    background: var(--primary);
    color: var(--text-on-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 600;
}

.user-button .user-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    display: none;
}

.user-button svg {
    width: 16px;
    height: 16px;
    color: var(--text-muted);
    display: none;
}

@media (min-width: 480px) {
    .user-button .user-name,
    .user-button svg {
        display: block;
    }
}

.user-dropdown {
    position: absolute;
    top: calc(100% + var(--space-2));
    right: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 180px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px) scale(0.96);
    transition: all var(--transition-fast);
    overflow: hidden;
}

.user-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.user-dropdown a {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    font-size: 14px;
    color: var(--text-primary);
    transition: background var(--transition-fast);
}

.user-dropdown a:hover {
    background: var(--bg-tertiary);
}

.user-dropdown a svg {
    width: 16px;
    height: 16px;
    color: var(--text-secondary);
    stroke-width: 1.5;
}

/* ================================================
   BOTTOM NAVIGATION - Estilo iOS/Android moderno
   ================================================ */

.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-light);
    display: flex;
    justify-content: space-around;
    padding: var(--space-4) 0 var(--space-2);
    padding-bottom: max(var(--space-2), env(safe-area-inset-bottom));
    z-index: 100;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: var(--space-1) var(--space-4);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-item svg {
    width: 26px;
    height: 26px;
    stroke: var(--text-secondary);
    stroke-width: 1.8;
    fill: none;
    transition: all var(--transition-fast);
}

.nav-item.active {
    color: var(--primary);
}

.nav-item.active svg {
    stroke: var(--primary);
    stroke-width: 2.2;
}

.notification-badge {
    position: absolute;
    top: 2px;
    right: calc(50% - 18px);
    background: var(--error);
    color: var(--text-on-primary);
    font-size: 10px;
    font-weight: 600;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ================================================
   BUTTONS
   ================================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    width: 100%;
}

.btn-primary,
.btn {
    background: var(--primary);
    color: var(--text-on-primary);
}

.btn-primary:hover,
.btn:hover {
    background: var(--primary-hover);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-medium);
}

.btn-ghost {
    background: transparent;
    color: var(--text-primary);
}

.btn-ghost:hover {
    background: var(--bg-tertiary);
}

.btn-danger {
    background: var(--error);
    color: var(--text-on-primary);
}

.btn-danger:hover {
    background: var(--error-hover);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

/* ================================================
   FORMS
   ================================================ */

.form-group {
    margin-bottom: var(--space-4);
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--space-3);
    font-size: 15px;
    font-family: inherit;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-muted);
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

.form-group input[type="date"],
.form-group input[type="time"] {
    width: 100%;
}

/* ================================================
   AUTH PAGES - Login/Register
   ================================================ */

.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: var(--space-4);
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--primary-light) 50%, var(--bg-primary) 100%);
    position: relative;
    overflow: hidden;
}

/* Decorative floating circles */
.auth-container::before,
.auth-container::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    opacity: 0.08;
    pointer-events: none;
}

.auth-container::before {
    width: 400px;
    height: 400px;
    background: var(--primary);
    top: -120px;
    right: -100px;
    animation: auth-float 8s ease-in-out infinite;
}

.auth-container::after {
    width: 300px;
    height: 300px;
    background: var(--primary-gradient-end);
    bottom: -80px;
    left: -60px;
    animation: auth-float 10s ease-in-out infinite reverse;
}

@keyframes auth-float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(20px, -30px) scale(1.05); }
}

@keyframes auth-slide-up {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes auth-logo-pop {
    0% { transform: scale(0.5); opacity: 0; }
    60% { transform: scale(1.1); }
    100% { transform: scale(1); opacity: 1; }
}

.auth-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    padding: 40px 32px 32px;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-xl), 0 0 40px var(--primary-muted);
    position: relative;
    z-index: 1;
    animation: auth-slide-up 0.5s ease-out;
}

.auth-header {
    text-align: center;
    margin-bottom: 32px;
}

.auth-header .logo-img {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    border-radius: var(--radius-lg);
    animation: auth-logo-pop 0.6s ease-out 0.2s both;
}

.auth-header h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
    letter-spacing: -0.3px;
}

.auth-header p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.auth-box h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-6);
    text-align: center;
    letter-spacing: -0.3px;
}

/* Auth form inputs - enhanced */
.auth-box .form-group {
    margin-bottom: 20px;
}

.auth-box .form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.auth-box .form-group input {
    width: 100%;
    padding: 12px 14px;
    font-size: 15px;
    font-family: inherit;
    background: var(--bg-tertiary);
    border: 1.5px solid var(--border-light);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.auth-box .form-group input::placeholder {
    color: var(--text-muted);
}

.auth-box .form-group input:hover {
    border-color: var(--border-medium);
}

.auth-box .form-group input:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--bg-secondary);
    box-shadow: 0 0 0 3px var(--primary-muted), var(--shadow-sm);
}

/* Auth submit button */
.auth-box .btn {
    width: 100%;
    padding: 13px 20px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--primary), var(--primary-gradient-end));
    color: var(--text-on-primary);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: 0 2px 8px var(--primary-muted);
    letter-spacing: 0.2px;
    margin-top: var(--space-2);
}

.auth-box .btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px var(--primary-muted);
    filter: brightness(1.05);
}

.auth-box .btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px var(--primary-muted);
}

/* Auth switch link */
.auth-switch {
    margin-top: 24px;
    text-align: center;
    font-size: 14px;
    color: var(--text-secondary);
    padding-top: 20px;
    border-top: 1px solid var(--border-light);
}

.auth-switch a {
    color: var(--primary);
    font-weight: 600;
    transition: color var(--transition-fast);
}

.auth-switch a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* Auth divider */
.auth-divider {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin: var(--space-6) 0;
    color: var(--text-muted);
    font-size: 13px;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-light);
}

/* Forgot password link in auth */
.auth-box a[href="forgot_password.php"] {
    font-size: 13px;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.auth-box a[href="forgot_password.php"]:hover {
    color: var(--primary);
}

/* Responsive adjustments */
@media (max-width: 480px) {
    .auth-box {
        padding: 32px 20px 24px;
        border-radius: 14px;
        margin: 0 var(--space-2);
    }

    .auth-header .logo-img {
        width: 48px;
        height: 48px;
    }

    .auth-header h1 {
        font-size: 22px;
    }

    .auth-container::before,
    .auth-container::after {
        display: none;
    }
}

/* ================================================
   ALERTS & MESSAGES
   ================================================ */

.alert,
.message {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-lg);
    font-size: 14px;
    margin-bottom: var(--space-5);
    animation: auth-slide-up 0.3s ease-out;
    line-height: 1.5;
}

.alert svg,
.message svg {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    margin-top: 1px;
}

.alert-error,
.message-error {
    background: var(--error-light);
    color: var(--error);
    border: 1px solid currentColor;
}

.alert-success,
.message-success {
    background: var(--success-light);
    color: var(--success);
    border: 1px solid currentColor;
}

.alert-warning,
.message-warning {
    background: var(--warning-light);
    color: var(--warning);
    border: 1px solid currentColor;
}

.message-info {
    background: var(--primary-light);
    color: var(--primary);
    border: 1px solid currentColor;
}

/* ================================================
   CARDS - Hábitos
   ================================================ */

.habitos-grid {
    display: grid;
    gap: var(--space-3);
    margin-top: var(--space-5);
}

.habito-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.habito-card:hover {
    border-color: var(--border-medium);
    box-shadow: var(--shadow-sm);
}

.habito-card:active {
    transform: scale(0.99);
}

/* ================================================
   RACHA (STREAK) SYSTEM - MATERIALES & GEMAS
   ================================================ */

/* Badge de racha - arriba a la derecha */
.racha-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    z-index: 2;
    line-height: 1;
    white-space: nowrap;
    letter-spacing: 0.3px;
}

.racha-badge svg {
    width: 13px;
    height: 13px;
    flex-shrink: 0;
}

/* ---- Nivel 10-19: BRONCE ---- */
.racha-10 {
    border: 2.5px solid #9A6428;
    box-shadow: 0 1px 3px rgba(154, 100, 40, 0.15);
    overflow: visible;
}
.racha-10 .racha-badge {
    background: linear-gradient(135deg, #C4A47A, #9A6428);
    color: #4A2E15;
}


/* ---- Nivel 20-29: PLATA ---- */
.racha-20 {
    border: 3px solid transparent;
    -webkit-background-clip: padding-box, border-box;
    background-clip: padding-box, border-box;
    background: 
        linear-gradient(var(--bg-secondary), var(--bg-secondary)) padding-box,
        linear-gradient(135deg, #A8A9AD, #D4D4D8, #E8E8EA, #C0C0C4, #A8A9AD) border-box;
    box-shadow: 0 1px 6px rgba(168, 169, 173, 0.3);
    overflow: visible;
}
.racha-20 .racha-badge {
    background: linear-gradient(135deg, #E8E8EA, #C0C0C4, #D4D4D8);
    color: #3F3F46;
    text-shadow: 0 1px 0 rgba(255,255,255,0.4);
}


/* ---- Nivel 30-39: ORO ---- */
.racha-30 {
    border: 3px solid transparent;
    -webkit-background-clip: padding-box, border-box;
    background-clip: padding-box, border-box;
    background: 
        linear-gradient(var(--bg-secondary), var(--bg-secondary)) padding-box,
        linear-gradient(135deg, #B8860B, #DAA520, #FFD700, #DAA520, #B8860B) border-box;
    box-shadow: 0 2px 8px rgba(218, 165, 32, 0.3);
    overflow: visible;
}
.racha-30 .racha-badge {
    background: linear-gradient(135deg, #FFD700, #DAA520, #F0C060);
    color: #5C3A00;
    text-shadow: 0 1px 0 rgba(255,215,0,0.3);
}


/* ---- Nivel 40-49: PLATINO ---- */
.racha-40 {
    border: 3.5px solid transparent;
    -webkit-background-clip: padding-box, border-box;
    background-clip: padding-box, border-box;
    background: 
        linear-gradient(var(--bg-secondary), var(--bg-secondary)) padding-box,
        linear-gradient(135deg, #C0C8D4, #E5E4E2, #F5F5F5, #E5E4E2, #B8C4D0, #E5E4E2) border-box;
    box-shadow: 0 2px 10px rgba(200, 200, 210, 0.4), inset 0 0 8px rgba(229, 228, 226, 0.1);
    overflow: visible;
}
.racha-40 .racha-badge {
    background: linear-gradient(135deg, #F5F5F5, #E0DFE0, #F5F5F5);
    color: #4A4A52;
    text-shadow: 0 1px 0 rgba(255,255,255,0.6);
    box-shadow: 0 1px 4px rgba(0,0,0,0.1);
}


/* ---- Nivel 50-59: ESMERALDA ---- */
.racha-50 {
    border: 3.5px solid transparent;
    -webkit-background-clip: padding-box, border-box;
    background-clip: padding-box, border-box;
    background: 
        linear-gradient(var(--bg-secondary), var(--bg-secondary)) padding-box,
        linear-gradient(135deg, #046A38, #50C878, #2E8B57, #48D175, #046A38) border-box;
    box-shadow: 0 2px 10px rgba(80, 200, 120, 0.25), inset 0 0 10px rgba(46, 139, 87, 0.05);
    overflow: visible;
}
.racha-50 .racha-badge {
    background: linear-gradient(135deg, #50C878, #2E8B57, #3CB371);
    color: #F0FFF0;
    text-shadow: 0 1px 2px rgba(0,80,40,0.3);
}


/* ---- Nivel 60-69: RUBÍ ---- */
.racha-60 {
    border: 4px solid transparent;
    -webkit-background-clip: padding-box, border-box;
    background-clip: padding-box, border-box;
    background: 
        linear-gradient(var(--bg-secondary), var(--bg-secondary)) padding-box,
        linear-gradient(135deg, #9B111E, #E0115F, #CC313D, #E0115F, #9B111E) border-box;
    box-shadow: 0 2px 12px rgba(224, 17, 95, 0.25), inset 0 0 10px rgba(155, 17, 30, 0.05);
    overflow: visible;
}
.racha-60 .racha-badge {
    background: linear-gradient(135deg, #E0115F, #CC313D, #D4456A);
    color: #FFF0F3;
    text-shadow: 0 1px 2px rgba(100,0,20,0.3);
}


/* ---- Nivel 70-79: ZAFIRO ---- */
.racha-70 {
    border: 4px solid transparent;
    -webkit-background-clip: padding-box, border-box;
    background-clip: padding-box, border-box;
    background: 
        linear-gradient(var(--bg-secondary), var(--bg-secondary)) padding-box,
        linear-gradient(135deg, #082567, #0F52BA, #2463C4, #0F52BA, #082567) border-box;
    box-shadow: 0 2px 14px rgba(15, 82, 186, 0.3), inset 0 0 12px rgba(8, 37, 103, 0.05);
    overflow: visible;
}
.racha-70 .racha-badge {
    background: linear-gradient(135deg, #0F52BA, #1565C0, #3274D0);
    color: #E8F0FE;
    text-shadow: 0 1px 2px rgba(0,20,80,0.35);
}


/* ---- Nivel 80-89: DIAMANTE ---- */
.racha-80 {
    border: 4px solid transparent;
    -webkit-background-clip: padding-box, border-box;
    background-clip: padding-box, border-box;
    background: 
        linear-gradient(var(--bg-secondary), var(--bg-secondary)) padding-box,
        linear-gradient(135deg, #B9F2FF, #E0F7FA, #FFFFFF, #B2EBF2, #80DEEA, #E0F7FA) border-box;
    box-shadow: 
        0 2px 14px rgba(178, 235, 242, 0.4),
        0 0 6px rgba(255, 255, 255, 0.3),
        inset 0 0 12px rgba(178, 235, 242, 0.08);
    overflow: visible;
}
.racha-80 .racha-badge {
    background: linear-gradient(135deg, #E0F7FA, #B2EBF2, #E0F7FA);
    color: #0277A8;
    text-shadow: 0 1px 0 rgba(255,255,255,0.5);
    box-shadow: 0 1px 6px rgba(178, 235, 242, 0.5);
}


/* ---- Nivel 90-99: AMATISTA ---- */
.racha-90 {
    border: 4.5px solid transparent;
    -webkit-background-clip: padding-box, border-box;
    background-clip: padding-box, border-box;
    background: 
        linear-gradient(var(--bg-secondary), var(--bg-secondary)) padding-box,
        linear-gradient(135deg, #4A0E4E, #9B30FF, #7B2D8E, #BF5FFF, #6A0DAD, #9B30FF) border-box;
    box-shadow: 
        0 2px 14px rgba(155, 48, 255, 0.3),
        inset 0 0 14px rgba(106, 13, 173, 0.06);
    overflow: visible;
}
.racha-90 .racha-badge {
    background: linear-gradient(135deg, #BF5FFF, #9B30FF, #A855F7);
    color: #F5EEFF;
    text-shadow: 0 1px 2px rgba(60,0,100,0.35);
    box-shadow: 0 1px 6px rgba(155, 48, 255, 0.4);
}


/* ---- Nivel 100+: OBSIDIANA — oscuro con gemas incrustadas ---- */
.racha-100 {
    border: 5px solid transparent;
    -webkit-background-clip: padding-box, border-box;
    background-clip: padding-box, border-box;
    background: 
        linear-gradient(var(--bg-secondary), var(--bg-secondary)) padding-box,
        linear-gradient(
            135deg, 
            #1A1A2E, #0F0F1A, #2D1B4E, 
            #0F0F1A, #1A0A0A, #0F0F1A,
            #0A1A2E, #0F0F1A, #1A1A2E
        ) border-box;
    overflow: visible;
    box-shadow: 
        0 2px 16px rgba(0, 0, 0, 0.5),
        0 0 4px rgba(155, 48, 255, 0.2),
        0 0 4px rgba(224, 17, 95, 0.15),
        0 0 4px rgba(80, 200, 120, 0.15),
        inset 0 0 16px rgba(0, 0, 0, 0.1);
    position: relative;
    animation: obsidiana-gems 6s ease-in-out infinite;
}
/* Destellos de gemas incrustadas */
.racha-100::before {
    content: '';
    position: absolute;
    inset: -6px;
    border-radius: calc(var(--radius-lg) + 6px);
    background: 
        radial-gradient(circle at 15% 15%, rgba(155, 48, 255, 0.5) 0%, transparent 8%),
        radial-gradient(circle at 85% 20%, rgba(224, 17, 95, 0.5) 0%, transparent 8%),
        radial-gradient(circle at 50% 90%, rgba(80, 200, 120, 0.5) 0%, transparent 8%),
        radial-gradient(circle at 90% 80%, rgba(15, 82, 186, 0.5) 0%, transparent 8%),
        radial-gradient(circle at 10% 80%, rgba(255, 215, 0, 0.5) 0%, transparent 8%),
        radial-gradient(circle at 50% 10%, rgba(178, 235, 242, 0.4) 0%, transparent 8%);
    z-index: 1;
    pointer-events: none;
    opacity: 0.7;
    animation: obsidiana-sparkle 4s ease-in-out infinite;
}
.racha-100 .racha-badge {
    background: linear-gradient(135deg, #1A1A2E, #2D1B4E, #1A1A2E);
    color: #E8E0F0;
    font-weight: 800;
    text-shadow: 0 0 6px rgba(155, 48, 255, 0.4);
    box-shadow: 0 1px 8px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255,255,255,0.08);
    border: 1px solid rgba(155, 48, 255, 0.3);
    z-index: 3;
}


@keyframes obsidiana-gems {
    0%, 100% {
        box-shadow: 
            0 2px 16px rgba(0, 0, 0, 0.5),
            0 0 4px rgba(155, 48, 255, 0.2),
            0 0 4px rgba(224, 17, 95, 0.15),
            0 0 4px rgba(80, 200, 120, 0.15),
            inset 0 0 16px rgba(0, 0, 0, 0.1);
    }
    33% {
        box-shadow: 
            0 2px 16px rgba(0, 0, 0, 0.5),
            0 0 6px rgba(224, 17, 95, 0.3),
            0 0 3px rgba(155, 48, 255, 0.15),
            0 0 3px rgba(255, 215, 0, 0.2),
            inset 0 0 16px rgba(0, 0, 0, 0.1);
    }
    66% {
        box-shadow: 
            0 2px 16px rgba(0, 0, 0, 0.5),
            0 0 6px rgba(80, 200, 120, 0.3),
            0 0 3px rgba(15, 82, 186, 0.2),
            0 0 3px rgba(155, 48, 255, 0.15),
            inset 0 0 16px rgba(0, 0, 0, 0.1);
    }
}

@keyframes obsidiana-sparkle {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 0.9; }
}

/* Dark mode adjustments */
@media (prefers-color-scheme: dark) {
    /* Silver needs dark bg fix */
    .racha-20 {
        -webkit-background-clip: padding-box, border-box;
        background-clip: padding-box, border-box;
        background: 
            linear-gradient(var(--bg-secondary), var(--bg-secondary)) padding-box,
            linear-gradient(135deg, #71717A, #A1A1AA, #D4D4D8, #A1A1AA, #71717A) border-box;
    }
    .racha-20 .racha-badge {
        background: linear-gradient(135deg, #A1A1AA, #D4D4D8, #A1A1AA);
        color: #18181B;
    }
    /* Gold */
    .racha-30 .racha-badge {
        background: linear-gradient(135deg, #F0C060, #DAA520, #FFD700);
        color: #3D2200;
    }
    /* Platinum */
    .racha-40 .racha-badge {
        background: linear-gradient(135deg, #D4D4D8, #E5E4E2, #D4D4D8);
        color: #27272A;
    }
    /* Emerald */
    .racha-50 .racha-badge {
        background: linear-gradient(135deg, #3CB371, #2E8B57, #50C878);
        color: #E8FFF0;
    }
    /* Ruby */
    .racha-60 .racha-badge {
        background: linear-gradient(135deg, #D4456A, #CC313D, #E0115F);
        color: #FFF0F3;
    }
    /* Sapphire */
    .racha-70 .racha-badge {
        background: linear-gradient(135deg, #3274D0, #1565C0, #0F52BA);
        color: #E8F0FE;
    }
    /* Diamond */
    .racha-80 {
        -webkit-background-clip: padding-box, border-box;
        background-clip: padding-box, border-box;
        background: 
            linear-gradient(var(--bg-secondary), var(--bg-secondary)) padding-box,
            linear-gradient(135deg, #80DEEA, #4DD0E1, #B2EBF2, #4DD0E1, #26C6DA, #B2EBF2) border-box;
    }
    .racha-80 .racha-badge {
        background: linear-gradient(135deg, #B2EBF2, #80DEEA, #B2EBF2);
        color: #004D5E;
    }
    /* Amethyst */
    .racha-90 .racha-badge {
        background: linear-gradient(135deg, #A855F7, #9B30FF, #BF5FFF);
        color: #F5EEFF;
    }
    /* Obsidian already dark-friendly */
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    .racha-100,
    .racha-100::before {
        animation: none !important;
    }
}

/* ================================================
   END RACHA SYSTEM
   ================================================ */

.habito-card h3 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-3);
}

.habito-stats {
    display: flex;
    gap: var(--space-4);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 13px;
    color: var(--text-secondary);
}

.stat-item svg {
    width: 14px;
    height: 14px;
    stroke-width: 1.5;
}

.stat-item strong {
    color: var(--text-primary);
    font-weight: 600;
}

.habito-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--space-3);
    padding-top: var(--space-3);
    border-top: 1px solid var(--border-light);
    font-size: 12px;
    color: var(--text-muted);
}

.habito-joined {
    background: var(--primary-muted);
    color: var(--primary);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 500;
}

/* Card para añadir hábito */
.add-habito-card {
    background: var(--bg-tertiary);
    border: 1px dashed var(--border-medium);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    min-height: 120px;
    color: var(--text-secondary);
}

.add-habito-card:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-muted);
}

.add-habito-card svg {
    width: 24px;
    height: 24px;
    stroke-width: 1.5;
}

.add-habito-card h3 {
    font-size: 14px;
    font-weight: 500;
    color: inherit;
    margin: 0;
}

/* ================================================
   REGISTRO CARDS - Estilo chat
   ================================================ */

.registro-card {
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    margin-bottom: var(--space-3);
    max-width: 85%;
    transition: box-shadow var(--transition-fast);
    position: relative;
}

/* Sin racha: estilos base normales */
.registro-card:not([class*="racha-"]) {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    overflow: hidden;
}

.registro-card:not([class*="racha-"])::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--user-color, var(--primary));
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.registro-card.own:not([class*="racha-"]) {
    background: var(--primary-muted);
    border-color: transparent;
}

.registro-card.own:not([class*="racha-"])::before {
    left: auto;
    right: 0;
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.registro-card.own {
    margin-left: auto;
}

/* Tinte azulado/morado sutil para registros propios */
.registro-card.own::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--primary);
    opacity: 0.06;
    border-radius: inherit;
    pointer-events: none;
    z-index: 0;
}

.registro-card.friend {
    margin-right: auto;
}

.registro-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-3);
}

.registro-header img {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.registro-date {
    font-size: 12px;
    color: var(--text-muted);
}

.registro-description {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
    margin: var(--space-2) 0;
}

.registro-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: var(--space-3);
}

.tag {
    background: var(--bg-tertiary);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: 12px;
    color: var(--text-secondary);
}

/* ================================================
   MODAL
   ================================================ */

.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--overlay-medium);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: flex-end;
    justify-content: center;
    padding: var(--space-4);
}

.modal.active {
    display: flex;
    animation: fadeIn var(--transition-fast);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    padding: var(--space-5);
    width: 100%;
    max-width: 480px;
    max-height: 85vh;
    overflow-y: auto;
    animation: slideUp var(--transition-base);
}

@media (min-width: 480px) {
    .modal {
        align-items: center;
    }
    
    .modal-content {
        border-radius: var(--radius-xl);
    }
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-5);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--border-light);
}

.modal-header h2 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 20px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

/* ================================================
   FAB - Floating Action Button
   ================================================ */

.fab {
    position: fixed;
    bottom: 90px;
    right: var(--space-4);
    width: 52px;
    height: 52px;
    border-radius: var(--radius-full);
    background: var(--primary);
    color: var(--text-on-primary);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-fast);
    z-index: 50;
}

.fab:hover {
    background: var(--primary-hover);
    transform: scale(1.05);
}

.fab:active {
    transform: scale(0.95);
}

.fab svg {
    width: 22px;
    height: 22px;
}

/* ================================================
   EMPTY STATE
   ================================================ */

.empty-state {
    text-align: center;
    padding: var(--space-8) var(--space-4);
}

.empty-state svg {
    width: 64px;
    height: 64px;
    color: var(--text-muted);
    margin-bottom: var(--space-4);
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.empty-state p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: var(--space-5);
}

.empty-state .btn {
    max-width: 200px;
    margin: 0 auto;
}

/* ================================================
   SEARCH
   ================================================ */

.search-box {
    margin: var(--space-4) 0;
}

.search-box input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: 15px;
    background: var(--bg-tertiary);
    border: 1px solid transparent;
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.search-box input:focus {
    background: var(--bg-secondary);
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-muted);
}

.search-box input::placeholder {
    color: var(--text-muted);
}

.search-filters {
    display: flex;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
    overflow-x: auto;
    padding-bottom: var(--space-2);
    -webkit-overflow-scrolling: touch;
}

.filter-btn {
    flex-shrink: 0;
    padding: var(--space-2) var(--space-4);
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    border-color: var(--border-medium);
    color: var(--text-primary);
}

.filter-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--text-on-primary);
}

.search-section {
    margin-bottom: var(--space-6);
}

.section-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-3);
}

.result-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    margin-bottom: var(--space-2);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.result-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

/* ================================================
   PROFILE
   ================================================ */

.profile-header {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    text-align: center;
    margin-bottom: var(--space-4);
}

.profile-photo,
.profile-photo-placeholder {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    margin: 0 auto var(--space-4);
    object-fit: cover;
}

.profile-photo-placeholder {
    background: var(--primary);
    color: var(--text-on-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 600;
}

.profile-nick {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.profile-email {
    font-size: 14px;
    color: var(--text-secondary);
}

.profile-actions {
    margin-top: var(--space-5);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

/* ================================================
   FRIENDS
   ================================================ */

.btn-friend {
    padding: var(--space-2) var(--space-4);
    background: var(--primary);
    color: var(--text-on-primary);
    border: none;
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-friend:hover {
    background: var(--primary-hover);
}

.btn-friend:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.friend-card {
    transition: all var(--transition-fast);
}

.friend-card:hover {
    box-shadow: var(--shadow-md);
}

/* ================================================
   COMMENTS
   ================================================ */

.comments-section {
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--border-light);
}

.comments-list {
    max-height: 300px;
    overflow-y: auto;
    margin-bottom: var(--space-3);
}

.comment-item {
    display: flex;
    gap: var(--space-3);
    padding: var(--space-3) 0;
}

.comment-item + .comment-item {
    border-top: 1px solid var(--border-light);
}

.comment-form {
    display: flex;
    gap: var(--space-2);
}

.comment-form input {
    flex: 1;
    padding: var(--space-2) var(--space-3);
    font-size: 14px;
    background: var(--bg-tertiary);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    color: var(--text-primary);
}

.comment-form input:focus {
    border-color: var(--primary);
    background: var(--bg-secondary);
}

.comment-form button {
    padding: var(--space-2) var(--space-3);
    background: var(--primary);
    color: var(--text-on-primary);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.comment-form button:hover {
    background: var(--primary-hover);
}

.btn-comment {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.btn-comment:hover {
    color: var(--primary);
}

.comment-count {
    font-size: 13px;
    color: var(--text-secondary);
}

.comment-delete-btn {
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.comment-item:hover .comment-delete-btn {
    opacity: 1;
}

.comment-avatar-link {
    display: block;
    flex-shrink: 0;
    text-decoration: none;
    cursor: pointer;
}

.comment-username-link {
    display: block;
    font-weight: 600;
    font-size: 13px;
    color: var(--text-primary);
    text-decoration: none;
    margin-bottom: 2px;
    cursor: pointer;
}

.comment-username-link:hover {
    text-decoration: underline;
}

/* ================================================
   LIKES
   ================================================ */

.like-avatars {
    display: flex;
    margin-left: var(--space-2);
}

.like-avatar {
    width: 20px;
    height: 20px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--bg-secondary);
    margin-left: -6px;
}

.like-avatar:first-child {
    margin-left: 0;
}

.heart-icon {
    transition: transform var(--transition-fast);
}

.heart-icon:active {
    transform: scale(0.85);
}

.like-count {
    font-size: 13px;
    color: var(--text-secondary);
}

/* ================================================
   TAGS SYSTEM
   ================================================ */

#tag_search {
    width: 100%;
}

#tag_search_results {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.tag-search-result {
    padding: var(--space-3);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.tag-search-result:hover {
    background: var(--bg-tertiary);
}

.tag-search-result + .tag-search-result {
    border-top: 1px solid var(--border-light);
}

#selected_tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

/* ================================================
   IMAGE MANAGEMENT
   ================================================ */

#edit_existing_images,
#editFotoPreview,
#fotosPreview {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-top: var(--space-3);
}

.edit-image-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: var(--space-3);
}

.edit-image-item .image-preview {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    flex-shrink: 0;
    position: relative;
}

.edit-image-item .image-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.edit-image-item .image-number {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: var(--primary);
    color: var(--text-on-primary);
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
}

.edit-image-item .image-controls {
    display: flex;
    gap: var(--space-2);
    margin-left: auto;
}

.edit-image-item .btn-move-up,
.edit-image-item .btn-move-down,
.edit-image-item .btn-delete-image {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.edit-image-item .btn-move-up:hover:not(:disabled),
.edit-image-item .btn-move-down:hover:not(:disabled) {
    background: var(--primary);
    color: var(--text-on-primary);
}

.edit-image-item .btn-delete-image:hover {
    background: var(--error);
    color: var(--text-on-primary);
}

.edit-image-item .btn-move-up:disabled,
.edit-image-item .btn-move-down:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.edit-image-thumb {
    position: relative;
    width: 100px;
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-light);
}

.edit-image-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.edit-image-thumb .delete-image-btn {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 24px;
    height: 24px;
    background: var(--error);
    color: var(--text-on-primary);
    border: none;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.edit-image-thumb:hover .delete-image-btn {
    opacity: 1;
}

.edit-image-thumb .new-badge {
    position: absolute;
    bottom: 4px;
    left: 4px;
    background: var(--success);
    color: var(--text-on-primary);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 10px;
    font-weight: 500;
}

#edit_foto {
    padding: var(--space-4);
    border: 1px dashed var(--border-medium);
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

#edit_foto:hover {
    border-color: var(--primary);
    background: var(--primary-muted);
}

/* ================================================
   REALTIME UPDATES
   ================================================ */

.registro-card.new-entry {
    animation: slideIn var(--transition-base);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

#realtime-toast-container {
    position: fixed;
    top: 60px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    pointer-events: none;
    max-width: 90vw;
}

.realtime-toast {
    background: var(--text-primary);
    color: var(--bg-primary);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 500;
    pointer-events: auto;
    cursor: pointer;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.new-posts-indicator {
    position: fixed;
    top: 60px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: var(--text-on-primary);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 500;
    box-shadow: var(--shadow-md);
    cursor: pointer;
    z-index: 100;
}

.registro-card.highlight-update {
    animation: highlight 0.5s ease;
}

@keyframes highlight {
    0%, 100% { box-shadow: none; }
    50% { box-shadow: 0 0 0 2px var(--primary); }
}

/* ================================================
   HABITO PREVIEW (Non-joined)
   ================================================ */

.habito-preview {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

/* ================================================
   UTILITIES
   ================================================ */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }

.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); }

.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-5 { margin-bottom: var(--space-5); }
.mb-6 { margin-bottom: var(--space-6); }

.hidden { display: none !important; }

/* ================================================
   PAGE TITLES
   ================================================ */

.page-header {
    margin-bottom: var(--space-5);
}

.page-header h1 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.page-header p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Alternative domains link */
.alt-domains {
    margin-top: var(--space-3);
    padding: var(--space-3);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    font-size: 12px;
    color: var(--text-muted);
}

.alt-domains a {
    color: var(--primary);
}

.alt-domains a:hover {
    text-decoration: underline;
}

/* ================================================
   SCROLLBAR STYLING
   ================================================ */

::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-medium);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ================================================
   iOS SAFE AREAS
   ================================================ */

@supports (padding: max(0px)) {
    .bottom-nav {
        padding-bottom: max(var(--space-2), env(safe-area-inset-bottom));
    }
    
    body {
        padding-bottom: calc(80px + env(safe-area-inset-bottom));
    }
}

/* ================================================
   VIDEO STYLES (Instagram-like autoplay)
   ================================================ */

.registro-video {
    background: var(--video-bg);
    border-radius: 8px;
}

.registro-media {
    position: relative;
}

.video-play-icon {
    pointer-events: none;
    transition: opacity 0.2s ease;
    z-index: 2;
}

/* Botón de mute/unmute - Estilo moderno */
.video-mute-btn {
    position: absolute;
    bottom: 12px;
    right: 12px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--overlay-medium);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1.5px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    opacity: 0.85;
}

.video-mute-btn:hover {
    background: var(--overlay-heavy);
    transform: scale(1.08);
    opacity: 1;
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.video-mute-btn:active {
    transform: scale(0.92);
    background: rgba(0, 0, 0, 0.8);
}

.video-mute-btn svg {
    width: 16px;
    height: 16px;
    filter: drop-shadow(0 1px 2px rgba(0,0,0,0.3));
    transition: transform 0.2s ease;
}

.video-mute-btn:hover svg {
    transform: scale(1.05);
}

/* Animación de pulso sutil cuando está silenciado */
.video-mute-btn.is-muted {
    animation: mute-pulse 2s infinite;
}

@keyframes mute-pulse {
    0%, 100% { 
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    }
    50% { 
        box-shadow: 0 2px 12px rgba(239, 68, 68, 0.4);
    }
}

.registro-video:not(:paused) + .video-play-icon {
    opacity: 0;
}

.carousel-slide[data-type="video"] {
    background: var(--video-bg);
}

.carousel-slide video {
    background: var(--video-bg);
}

/* Efecto hover en videos */
.registro-media .registro-video:hover {
    cursor: pointer;
}

/* Indicador de video en miniatura (para previews) */
.preview-video-badge {
    position: absolute;
    bottom: 4px;
    right: 4px;
    background: var(--overlay-heavy);
    color: var(--text-on-primary);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 600;
}

/* Animación suave para el icono de play */
.video-play-icon svg {
    transition: transform 0.2s ease;
}

.registro-media:hover .video-play-icon svg {
    transform: translate(-50%, -50%) scale(1.1);
}

/* Mejora para videos en modo oscuro */
@media (prefers-color-scheme: dark) {
    .registro-video {
        background: var(--video-bg);
    }
    
    .carousel-slide[data-type="video"],
    .carousel-slide video {
        background: var(--video-bg);
    }
}

/* Control de volumen oculto para videos silenciados */
.registro-video::-webkit-media-controls-volume-slider,
.registro-video::-webkit-media-controls-mute-button {
    display: none;
}

/* ================================================
   CAROUSEL IMAGE CENTERING
   ================================================ */

/* Contenedor del carrusel */
.image-carousel {
    background: var(--bg-secondary) !important;
}

/* Contenedor de slides con align-items stretch para igualar alturas */
.carousel-images {
    align-items: stretch !important;
}

/* Cada slide debe centrar su contenido verticalmente */
.carousel-slide {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    background: var(--bg-secondary) !important;
    min-height: 100% !important;
}

/* Las imágenes dentro del carrusel */
.carousel-slide img {
    object-fit: contain !important;
    max-height: 400px !important;
    margin: auto !important;
}

/* Los videos dentro del carrusel */
.carousel-slide video {
    object-fit: contain !important;
    max-height: 400px !important;
    margin: auto !important;
}