/* =====================================================
   COGNO SOLUTION - Main Stylesheet
   AI-Powered Mental Health & Cognitive Support Platform
   ===================================================== */

/* =====================================================
   CSS VARIABLES & THEME
   ===================================================== */
:root {
    /* Primary Colors - Cognitive Friendly (No Purple) */
    --primary-blue: #3B82F6;
    --primary-blue-dark: #2563EB;
    --primary-blue-light: #60A5FA;
    --primary-green: #10B981;
    --primary-green-dark: #059669;
    --primary-orange: #F59E0B;
    --primary-orange-dark: #D97706;
    --primary-red: #EF4444;
    --primary-red-dark: #DC2626;

    /* Module Colors */
    --dyslexia-color: #3B82F6;
    --dyslexia-bg: #EFF6FF;
    --dyscalculia-color: #10B981;
    --dyscalculia-bg: #ECFDF5;
    --dysgraphia-color: #F59E0B;
    --dysgraphia-bg: #FFFBEB;
    --dyspraxia-color: #6366F1;
    --dyspraxia-dark: #4F46E5;
    --dyspraxia-bg: #EEF2FF;

    /* Neutral Colors */
    --white: #FFFFFF;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8FAFC;
    --bg-tertiary: #F1F5F9;
    --text-primary: #1E293B;
    --text-secondary: #64748B;
    --text-muted: #94A3B8;
    --border-color: #E2E8F0;
    --border-dark: #CBD5E1;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-dyslexic: 'OpenDyslexic', 'Atkinson Hyperlegible', Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;

    /* Z-Index Scale */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
    --z-toast: 800;

    /* ================================================
       SEMANTIC ALIASES (for landing page & components)
       ================================================ */
    /* Colors */
    --color-primary: var(--primary-blue);
    --color-primary-dark: var(--primary-blue-dark);
    --color-primary-light: var(--primary-blue-light);
    --color-primary-100: #DBEAFE;
    --color-background: var(--bg-primary);
    --color-surface: var(--bg-secondary);
    --color-text: var(--text-primary);
    --color-text-secondary: var(--text-secondary);
    --color-border: var(--border-color);
    --color-success: var(--primary-green);
    --color-warning: var(--primary-orange);
    --color-danger: var(--primary-red);

    /* Module Color Aliases */
    --color-dyslexia: var(--dyslexia-color);
    --color-dyscalculia: var(--dyscalculia-color);
    --color-dysgraphia: var(--dysgraphia-color);
    --color-dyspraxia: var(--dyspraxia-color);

    /* Spacing Scale (Tailwind-style) */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;

    /* Gradient */
    --gradient-primary: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
}

/* =====================================================
   RESET & BASE STYLES
   ===================================================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img,
video {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-blue-dark);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
}

ul,
ol {
    list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 {
    font-size: var(--font-size-4xl);
}

h2 {
    font-size: var(--font-size-3xl);
}

h3 {
    font-size: var(--font-size-2xl);
}

h4 {
    font-size: var(--font-size-xl);
}

h5 {
    font-size: var(--font-size-lg);
}

h6 {
    font-size: var(--font-size-base);
}

p {
    margin-bottom: var(--spacing-md);
}

/* =====================================================
   LAYOUT
   ===================================================== */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-sm {
    max-width: 640px;
}

.container-md {
    max-width: 768px;
}

.container-lg {
    max-width: 1024px;
}

.container-xl {
    max-width: 1280px;
}

.container-full {
    max-width: 100%;
}

.page-wrapper {
    display: flex;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    margin-top: 64px;
    padding: var(--spacing-xl) var(--spacing-2xl);
    margin-left: 0;
    width: 100%;
    transition: margin-left var(--transition-base);
    padding-bottom: calc(80px + env(safe-area-inset-bottom, 0px));
}

.main-content.sidebar-collapsed {
    margin-left: 0;
}

/* Has Sidebar Layout (Dashboard) — Sidebar now globally hidden, bottom nav used instead */
body.has-sidebar {
    display: flex;
    flex-direction: column;
}

/* Sidebar is globally hidden — replaced by bottom navigation */
body.has-sidebar .sidebar,
.sidebar {
    display: none !important;
}

body.has-sidebar .main-content {
    margin-left: 0;
    margin-top: 0;
    width: 100%;
    min-height: 100vh;
    padding-bottom: calc(80px + env(safe-area-inset-bottom, 0px));
}

body.has-sidebar .navbar {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    padding: 0 var(--spacing-lg);
    height: 56px;
    background: var(--white);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Content Area */
.content-area {
    padding: var(--spacing-lg);
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-cols-1 {
    grid-template-columns: repeat(1, 1fr);
}

.grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid-cols-5 {
    grid-template-columns: repeat(5, 1fr);
}

.grid-cols-6 {
    grid-template-columns: repeat(6, 1fr);
}

/* Flexbox Utilities */
.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.flex-wrap {
    flex-wrap: wrap;
}

.items-start {
    align-items: flex-start;
}

.items-center {
    align-items: center;
}

.items-end {
    align-items: flex-end;
}

.justify-start {
    justify-content: flex-start;
}

.justify-center {
    justify-content: center;
}

.justify-end {
    justify-content: flex-end;
}

.justify-between {
    justify-content: space-between;
}

.gap-sm {
    gap: var(--spacing-sm);
}

.gap-md {
    gap: var(--spacing-md);
}

.gap-lg {
    gap: var(--spacing-lg);
}

.gap-xl {
    gap: var(--spacing-xl);
}

/* =====================================================
   NAVIGATION & SIDEBAR
   ===================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: var(--white);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-xl);
    z-index: var(--z-fixed);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: var(--font-size-xl);
    color: var(--text-primary);
}

.navbar-brand img {
    height: 40px;
    width: auto;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.navbar-link {
    color: var(--text-secondary);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.navbar-link:hover,
.navbar-link.active {
    color: var(--primary-blue);
    background: var(--dyslexia-bg);
}

.navbar-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.navbar-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--border-color);
}

/* Dashboard Navbar */
.navbar-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
    /* Allow left side to grow */
    min-width: 0;
    /* Prevent flex children from overflowing */
}

.navbar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
    /* Keep icons on the right */
}

.navbar-right .search-wrapper {
    flex: 0 1 auto;
    max-width: 250px;
}

.page-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Breadcrumbs */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

.breadcrumb a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.breadcrumb a:hover {
    color: var(--primary-blue-dark);
    text-decoration: underline;
}

.breadcrumb span {
    color: var(--text-muted);
}

.breadcrumb .font-bold {
    color: var(--text-primary);
}

/* User Menu Button */
.user-menu-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: transparent;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.user-menu-btn:hover {
    background: var(--bg-secondary);
}

.user-menu-btn .avatar {
    width: 36px;
    height: 36px;
}

.user-menu-btn .user-name {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.user-menu-btn i.fa-chevron-down {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Notification Button */
.notification-btn {
    position: relative;
}

.notification-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    min-width: 18px;
    height: 18px;
    background: var(--primary-red);
    color: white;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
}

/* Button Icon Ghost */
.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: none;
}

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

/* Sidebar */
.sidebar {
    position: fixed;
    left: 0;
    top: 64px;
    bottom: 0;
    width: 280px;
    background: var(--white);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    z-index: var(--z-sticky);
    transition: width var(--transition-base);
}

.sidebar.collapsed {
    width: 80px;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.sidebar-logo {
    width: 36px;
    height: 36px;
    object-fit: contain;
}

.sidebar-brand {
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: var(--text-primary);
}

.sidebar-close {
    display: none;
    margin-left: auto;
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-md);
}

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

@media (max-width: 1024px) {
    .sidebar-close {
        display: block;
    }
}

.sidebar-nav {
    padding: var(--spacing-md);
    flex: 1;
    overflow-y: auto;
}

.sidebar-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-item {
    margin-bottom: var(--spacing-xs);
}

.sidebar-section {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-xs);
    margin-top: var(--spacing-md);
}

.sidebar-footer {
    padding: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.sidebar-section-title {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-xs);
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: all var(--transition-fast);
    margin-bottom: var(--spacing-xs);
}

.sidebar-link:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.sidebar-link.active {
    background: var(--primary-blue);
    color: var(--white);
}

.sidebar-link i {
    width: 20px;
    text-align: center;
    font-size: var(--font-size-lg);
}

.sidebar-link.dyslexia:hover,
.sidebar-link.dyslexia.active {
    background: var(--dyslexia-color);
    color: var(--white);
}

.sidebar-link.dyscalculia:hover,
.sidebar-link.dyscalculia.active {
    background: var(--dyscalculia-color);
    color: var(--white);
}

.sidebar-link.dysgraphia:hover,
.sidebar-link.dysgraphia.active {
    background: var(--dysgraphia-color);
    color: var(--white);
}

.sidebar-link.dyspraxia:hover,
.sidebar-link.dyspraxia.active {
    background: var(--dyspraxia-color);
    color: var(--white);
}

/* =====================================================
   CARDS
   ===================================================== */
.card {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all var(--transition-base);
}

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

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.card-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.card-body {
    padding: var(--spacing-lg);
}

.card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

/* Card Variants */
.card-dyslexia {
    border-left: 4px solid var(--dyslexia-color);
}

.card-dyscalculia {
    border-left: 4px solid var(--dyscalculia-color);
}

.card-dysgraphia {
    border-left: 4px solid var(--dysgraphia-color);
}

.card-dyspraxia {
    border-left: 4px solid var(--dyspraxia-color);
}

.card-stat {
    text-align: center;
    padding: var(--spacing-xl);
}

.card-stat-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    margin: 0 auto var(--spacing-md);
}

.card-stat-value {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.card-stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* Module Cards */
.module-card {
    position: relative;
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-base);
    cursor: pointer;
}

.module-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.module-card-icon {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-3xl);
    margin: 0 auto var(--spacing-lg);
    color: var(--white);
}

.module-card.dyslexia .module-card-icon {
    background: linear-gradient(135deg, var(--dyslexia-color), #1D4ED8);
}

.module-card.dyscalculia .module-card-icon {
    background: linear-gradient(135deg, var(--dyscalculia-color), #047857);
}

.module-card.dysgraphia .module-card-icon {
    background: linear-gradient(135deg, var(--dysgraphia-color), #D97706);
}

.module-card.dyspraxia .module-card-icon {
    background: linear-gradient(135deg, var(--dyspraxia-color), #DC2626);
}

.module-card-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.module-card-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.5;
}

/* =====================================================
   BUTTONS
   ===================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 500;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    min-height: 44px;
    border: 2px solid transparent;
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Button Sizes */
.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
    min-height: 36px;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
    min-height: 52px;
}

.btn-xl {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-xl);
    min-height: 60px;
}

/* Button Variants */
.btn-primary {
    background: var(--primary-blue);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--primary-blue-dark);
    color: var(--white);
}

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

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

.btn-success {
    background: var(--primary-green);
    color: var(--white);
}

.btn-success:hover {
    background: var(--primary-green-dark);
    color: var(--white);
}

.btn-warning {
    background: var(--primary-orange);
    color: var(--white);
}

.btn-warning:hover {
    background: var(--primary-orange-dark);
    color: var(--white);
}

.btn-danger {
    background: var(--primary-red);
    color: var(--white);
}

.btn-danger:hover {
    background: var(--primary-red-dark);
    color: var(--white);
}

.btn-outline {
    background: transparent;
    border-color: var(--border-dark);
    color: var(--text-primary);
}

.btn-outline:hover {
    background: var(--bg-secondary);
}

.btn-outline-primary {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

.btn-outline-primary:hover {
    background: var(--primary-blue);
    color: var(--white);
}

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

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

/* Module Buttons */
.btn-dyslexia {
    background: var(--dyslexia-color);
    color: var(--white);
}

.btn-dyslexia:hover {
    background: #2563EB;
    color: var(--white);
}

.btn-dyscalculia {
    background: var(--dyscalculia-color);
    color: var(--white);
}

.btn-dyscalculia:hover {
    background: #059669;
    color: var(--white);
}

.btn-dysgraphia {
    background: var(--dysgraphia-color);
    color: var(--white);
}

.btn-dysgraphia:hover {
    background: #D97706;
    color: var(--white);
}

.btn-dyspraxia {
    background: var(--dyspraxia-color);
    color: var(--white);
}

.btn-dyspraxia:hover {
    background: #DC2626;
    color: var(--white);
}

/* Button Full Width */
.btn-block {
    width: 100%;
}

/* Button Group */
.btn-group {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-group .btn {
    flex: 1;
}

/* =====================================================
   FORMS
   ===================================================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.form-label.required::after {
    content: '*';
    color: var(--primary-red);
    margin-left: var(--spacing-xs);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background: var(--white);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    min-height: 48px;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

.form-input.error,
.form-textarea.error,
.form-select.error {
    border-color: var(--primary-red);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-helper {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.form-error {
    font-size: var(--font-size-sm);
    color: var(--primary-red);
    margin-top: var(--spacing-xs);
}

/* Input with Icon */
.input-group {
    position: relative;
}

.input-group-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.input-group .form-input {
    padding-left: calc(var(--spacing-md) * 2 + 20px);
}

.input-group-append {
    position: absolute;
    right: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.form-check-input {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-dark);
    border-radius: var(--radius-sm);
    cursor: pointer;
    accent-color: var(--primary-blue);
}

.form-check-input[type="radio"] {
    border-radius: var(--radius-full);
}

.form-check-label {
    font-size: var(--font-size-base);
    color: var(--text-primary);
    cursor: pointer;
}

/* =====================================================
   BADGES & TAGS
   ===================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.badge-primary {
    background: var(--dyslexia-bg);
    color: var(--primary-blue);
}

.badge-success {
    background: var(--dyscalculia-bg);
    color: var(--primary-green);
}

.badge-warning {
    background: var(--dysgraphia-bg);
    color: var(--primary-orange);
}

.badge-danger {
    background: var(--dyspraxia-bg);
    color: var(--primary-red);
}

.badge-gray {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.badge-dyslexia {
    background: var(--dyslexia-bg);
    color: var(--dyslexia-color);
}

.badge-dyscalculia {
    background: var(--dyscalculia-bg);
    color: var(--dyscalculia-color);
}

.badge-dysgraphia {
    background: var(--dysgraphia-bg);
    color: var(--dysgraphia-color);
}

.badge-dyspraxia {
    background: var(--dyspraxia-bg);
    color: var(--dyspraxia-color);
}

/* =====================================================
   ALERTS & NOTIFICATIONS
   ===================================================== */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.alert-icon {
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.alert-content {
    flex: 1;
}

.alert-title {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.alert-message {
    font-size: var(--font-size-sm);
}

.alert-info {
    background: var(--dyslexia-bg);
    color: var(--primary-blue);
    border: 1px solid var(--primary-blue-light);
}

.alert-success {
    background: var(--dyscalculia-bg);
    color: var(--primary-green);
    border: 1px solid var(--primary-green);
}

.alert-warning {
    background: var(--dysgraphia-bg);
    color: var(--primary-orange);
    border: 1px solid var(--primary-orange);
}

.alert-error {
    background: var(--dyspraxia-bg);
    color: var(--primary-red);
    border: 1px solid var(--primary-red);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: var(--spacing-xl);
    right: var(--spacing-xl);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 320px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast-success {
    border-left: 4px solid var(--primary-green);
}

.toast-error {
    border-left: 4px solid var(--primary-red);
}

.toast-warning {
    border-left: 4px solid var(--primary-orange);
}

.toast-info {
    border-left: 4px solid var(--primary-blue);
}

/* =====================================================
   PROGRESS BARS
   ===================================================== */
.progress {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

.progress-bar-primary {
    background: var(--primary-blue);
}

.progress-bar-success {
    background: var(--primary-green);
}

.progress-bar-warning {
    background: var(--primary-orange);
}

.progress-bar-danger {
    background: var(--primary-red);
}

.progress-lg {
    height: 12px;
}

.progress-sm {
    height: 4px;
}

/* Progress with Label */
.progress-labeled {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.progress-labeled .progress {
    flex: 1;
}

.progress-labeled .progress-value {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
    min-width: 40px;
    text-align: right;
}

/* =====================================================
   MODALS
   ===================================================== */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: var(--z-modal-backdrop);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal-backdrop.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.9);
    transition: transform var(--transition-base);
}

.modal-backdrop.active .modal {
    transform: scale(1);
}

.modal-lg {
    max-width: 800px;
}

.modal-sm {
    max-width: 400px;
}

.modal-full {
    max-width: 95vw;
    max-height: 95vh;
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.modal-close {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

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

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
}

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

/* =====================================================
   TABLES
   ===================================================== */
.table-container {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.02em;
    background: var(--bg-secondary);
}

.table tbody tr:hover {
    background: var(--bg-secondary);
}

.table-striped tbody tr:nth-child(even) {
    background: var(--bg-secondary);
}

/* =====================================================
   AVATARS
   ===================================================== */
.avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    overflow: hidden;
    border: 2px solid var(--border-color);
    flex-shrink: 0;
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-sm {
    width: 32px;
    height: 32px;
}

.avatar-lg {
    width: 56px;
    height: 56px;
}

.avatar-xl {
    width: 80px;
    height: 80px;
}

.avatar-2xl {
    width: 120px;
    height: 120px;
}

.avatar-group {
    display: flex;
}

.avatar-group .avatar {
    margin-left: -8px;
    border: 2px solid var(--white);
}

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

.avatar-placeholder {
    background: var(--primary-blue);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

/* =====================================================
   LOADING STATES
   ===================================================== */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-blue);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

.spinner-sm {
    width: 24px;
    height: 24px;
    border-width: 2px;
}

.spinner-lg {
    width: 56px;
    height: 56px;
    border-width: 4px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
}

.loading-text {
    margin-top: var(--spacing-md);
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
}

.skeleton {
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

@keyframes shimmer {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

.skeleton-text {
    height: 16px;
    margin-bottom: var(--spacing-sm);
}

.skeleton-title {
    height: 24px;
    width: 60%;
    margin-bottom: var(--spacing-md);
}

.skeleton-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
}

.skeleton-card {
    height: 200px;
}

/* =====================================================
   EMPTY STATES
   ===================================================== */
.empty-state {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-xl);
}

.empty-state-icon {
    font-size: 4rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
}

.empty-state-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.empty-state-text {
    color: var(--text-secondary);
    max-width: 400px;
    margin: 0 auto var(--spacing-lg);
}

/* =====================================================
   TOOLTIPS
   ===================================================== */
.tooltip {
    position: relative;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--text-primary);
    color: var(--white);
    font-size: var(--font-size-xs);
    border-radius: var(--radius-md);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    margin-bottom: var(--spacing-xs);
}

.tooltip:hover::after {
    opacity: 1;
    visibility: visible;
}

/* =====================================================
   DROPDOWN
   ===================================================== */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 200px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    padding: var(--spacing-sm);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: var(--z-dropdown);
}

.dropdown.active .dropdown-menu,
.dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--bg-secondary);
}

.dropdown-item i {
    width: 20px;
    color: var(--text-secondary);
}

.dropdown-divider {
    height: 1px;
    background: var(--border-color);
    margin: var(--spacing-sm) 0;
}

/* =====================================================
   TABS
   ===================================================== */
.tabs {
    display: flex;
    gap: var(--spacing-xs);
    border-bottom: 2px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
}

.tab {
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-secondary);
    font-weight: 500;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all var(--transition-fast);
}

.tab:hover {
    color: var(--text-primary);
}

.tab.active {
    color: var(--primary-blue);
    border-bottom-color: var(--primary-blue);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* =====================================================
   UTILITY CLASSES
   ===================================================== */
/* Text */
.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);
}

.text-white {
    color: var(--white);
}

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

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

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

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

.text-dyslexia {
    color: var(--dyslexia-color);
}

.text-dyscalculia {
    color: var(--dyscalculia-color);
}

.text-dysgraphia {
    color: var(--dysgraphia-color);
}

.text-dyspraxia {
    color: var(--dyspraxia-color);
}

.font-bold {
    font-weight: 700;
}

.font-semibold {
    font-weight: 600;
}

.font-medium {
    font-weight: 500;
}

.font-normal {
    font-weight: 400;
}

.text-sm {
    font-size: var(--font-size-sm);
}

.text-lg {
    font-size: var(--font-size-lg);
}

.text-xl {
    font-size: var(--font-size-xl);
}

.text-2xl {
    font-size: var(--font-size-2xl);
}

/* Backgrounds */
.bg-white {
    background-color: var(--white);
}

.bg-primary {
    background-color: var(--bg-primary);
}

.bg-secondary {
    background-color: var(--bg-secondary);
}

.bg-blue {
    background-color: var(--primary-blue);
}

.bg-green {
    background-color: var(--primary-green);
}

.bg-orange {
    background-color: var(--primary-orange);
}

.bg-red {
    background-color: var(--primary-red);
}

.bg-dyslexia {
    background-color: var(--dyslexia-bg);
}

.bg-dyscalculia {
    background-color: var(--dyscalculia-bg);
}

.bg-dysgraphia {
    background-color: var(--dysgraphia-bg);
}

.bg-dyspraxia {
    background-color: var(--dyspraxia-bg);
}

/* Spacing */
.m-0 {
    margin: 0;
}

.m-auto {
    margin: auto;
}

.mt-sm {
    margin-top: var(--spacing-sm);
}

.mt-md {
    margin-top: var(--spacing-md);
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.mt-xl {
    margin-top: var(--spacing-xl);
}

.mb-sm {
    margin-bottom: var(--spacing-sm);
}

.mb-md {
    margin-bottom: var(--spacing-md);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

.mb-xl {
    margin-bottom: var(--spacing-xl);
}

.ml-auto {
    margin-left: auto;
}

.mr-auto {
    margin-right: auto;
}

.p-0 {
    padding: 0;
}

.p-sm {
    padding: var(--spacing-sm);
}

.p-md {
    padding: var(--spacing-md);
}

.p-lg {
    padding: var(--spacing-lg);
}

.p-xl {
    padding: var(--spacing-xl);
}

/* Display */
.hidden {
    display: none;
}

.block {
    display: block;
}

.inline-block {
    display: inline-block;
}

.inline-flex {
    display: inline-flex;
}

/* Width */
.w-full {
    width: 100%;
}

.w-auto {
    width: auto;
}

.max-w-sm {
    max-width: 400px;
}

.max-w-md {
    max-width: 600px;
}

.max-w-lg {
    max-width: 800px;
}

/* Border Radius */
.rounded {
    border-radius: var(--radius-md);
}

.rounded-lg {
    border-radius: var(--radius-lg);
}

.rounded-xl {
    border-radius: var(--radius-xl);
}

.rounded-full {
    border-radius: var(--radius-full);
}

/* Shadow */
.shadow-sm {
    box-shadow: var(--shadow-sm);
}

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

.shadow-lg {
    box-shadow: var(--shadow-lg);
}

.shadow-none {
    box-shadow: none;
}

/* Cursor */
.cursor-pointer {
    cursor: pointer;
}

.cursor-not-allowed {
    cursor: not-allowed;
}

/* Overflow */
.overflow-hidden {
    overflow: hidden;
}

.overflow-auto {
    overflow: auto;
}

.overflow-x-auto {
    overflow-x: auto;
}

.overflow-y-auto {
    overflow-y: auto;
}

/* =====================================================
   ANIMATIONS
   ===================================================== */
.fade-in {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.slide-up {
    animation: slideUp 0.3s ease;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.bounce {
    animation: bounce 0.5s ease;
}

@keyframes bounce {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

/* =====================================================
   FOCUS STYLES (Accessibility)
   ===================================================== */
*:focus {
    outline: none;
}

*:focus-visible {
    outline: 3px solid var(--primary-blue);
    outline-offset: 2px;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -100%;
    left: 0;
    background: var(--primary-blue);
    color: var(--white);
    padding: var(--spacing-md);
    z-index: 9999;
}

.skip-link:focus {
    top: 0;
}

/* =====================================================
   MODALS BASE STYLES
   ===================================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-modal);
    align-items: center;
    justify-content: center;
    visibility: hidden;
    opacity: 0;
    transition: visibility 0s 0.2s, opacity 0.2s linear;
}

.modal.open {
    display: flex;
    visibility: visible;
    opacity: 1;
    transition: opacity 0.2s linear;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(2px);
}

.modal-container {
    position: relative;
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    z-index: 10;
}

body.dark-mode .modal-container {
    background: #1e293b;
    border: 1px solid #334155;
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
}

/* =====================================================
   PROMINENT BUTTONS & ANIMATIONS
   ===================================================== */
.btn-hero {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-lg);
    font-weight: 700;
    box-shadow: 0 4px 14px 0 rgba(59, 130, 246, 0.39);
    transition: all 0.3s ease;
    animation: pulsate 2s infinite;
}

.btn-hero:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.43);
}

@keyframes pulsate {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.03);
    }

    100% {
        transform: scale(1);
    }
}