/*
 * PokerCoaching.ai - Main Stylesheet
 *
 * CSS Architecture:
 * 1. FONT IMPORTS
 * 2. DESIGN SYSTEM (CSS VARIABLES)
 * 3. GLOBAL STYLES & RESETS
 * 4. UTILITY CLASSES
 * 5. LAYOUT & PAGE STRUCTURE (Header, Main, Footer)
 * 6. PAGE SECTIONS (Hero, Features, Chat App)
 * 7. COMPONENT STYLES (Buttons, Cards, Forms)
 * 8. CHAT INTERFACE STYLES
 * 9. RESPONSIVE DESIGN
 */

/* 1. FONT IMPORTS */
@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@400;600;700&family=Poppins:wght@600;700;800&display=swap');

/* 2. DESIGN SYSTEM (CSS VARIABLES) */
:root {
    /* Color Palette - Gaming/Poker Dark Theme */
    --color-primary: #7C3AED;      /* Purple */
    --color-secondary: #A78BFA;    /* Light Purple */
    --color-cta: #F43F5E;          /* Pink/Red - High contrast CTA */
    --color-cta-hover: #E11D48;
    --color-background: #0F0F23;   /* Deep Blue/Black */
    --color-surface-1: #1A1A2E;    /* Card backgrounds */
    --color-surface-2: #252542;    /* Hover states */
    --color-border: #3A3A5A;
    --color-text-primary: #E2E8F0;
    --color-text-secondary: #94A3B8;
    --color-success: #22C55E;
    --color-error: #EF4444;
    --color-gold: #F59E0B;         /* Poker chip gold */

    /* Typography */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Open Sans', sans-serif;
    --text-base-size: 16px;

    /* Spacing Scale */
    --space-xs: 0.25rem;  /* 4px */
    --space-sm: 0.5rem;   /* 8px */
    --space-md: 1rem;     /* 16px */
    --space-lg: 2rem;     /* 32px */
    --space-xl: 4rem;     /* 64px */
    --space-2xl: 6rem;    /* 96px */

    /* Sizing */
    --max-width: 1200px;
    --header-height: 70px;

    /* Borders & Shadows */
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    --border-radius-full: 9999px;
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.35);
    --shadow-glow: 0 0 30px rgba(124, 58, 237, 0.4);
    --shadow-cta-glow: 0 0 30px rgba(244, 63, 94, 0.4);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

/* 3. GLOBAL STYLES & RESETS */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: var(--text-base-size);
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
    background-color: var(--color-background);
    color: var(--color-text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: 1.2;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: var(--space-lg); }
h3 { font-size: clamp(1.25rem, 2vw, 1.75rem); }

p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    font-size: 1.1rem;
}

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

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

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-background);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

/* 4. UTILITY CLASSES */
.container {
    width: 90%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-xl) 0;
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-primary), var(--color-cta));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* 5. LAYOUT & PAGE STRUCTURE */

/* Sticky Header */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-height);
    background: rgba(15, 15, 35, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    width: 90%;
    max-width: var(--max-width);
    margin: 0 auto;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-cta));
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.logo-icon svg {
    width: 24px;
    height: 24px;
}

/* Navigation */
.main-nav {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.main-nav a {
    color: var(--color-text-secondary);
    font-weight: 600;
    position: relative;
    padding: var(--space-xs) 0;
}

.main-nav a:not(.btn)::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-base);
}

.main-nav a:not(.btn):hover::after {
    width: 100%;
}

.main-nav a:hover {
    color: var(--color-text-primary);
}

/* Mobile Nav Toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text-primary);
    cursor: pointer;
    padding: var(--space-sm);
}

.nav-toggle svg {
    width: 24px;
    height: 24px;
}

/* Footer */
.main-footer {
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--color-border);
    background: var(--color-surface-1);
}

.footer-content {
    width: 90%;
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.footer-section h4 {
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
    font-size: 1.1rem;
}

.footer-section p {
    font-size: 0.9rem;
    margin-bottom: var(--space-sm);
}

.footer-section a {
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: var(--color-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.footer-bottom p {
    margin: 0;
}

/* 6. PAGE SECTIONS */

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding-top: calc(var(--header-height) + var(--space-xl));
    position: relative;
    overflow: hidden;
}

/* Animated background gradient */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(124, 58, 237, 0.3), transparent),
        radial-gradient(ellipse 60% 40% at 100% 50%, rgba(244, 63, 94, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 0% 50%, rgba(124, 58, 237, 0.15), transparent);
    z-index: -1;
    animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
    0% { opacity: 0.7; }
    100% { opacity: 1; }
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    margin-bottom: var(--space-md);
}

.hero p {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto var(--space-lg);
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* Poker card decoration */
.hero-decoration {
    position: absolute;
    opacity: 0.1;
    font-size: 15rem;
    font-weight: bold;
    color: var(--color-primary);
    z-index: -1;
}

.hero-decoration.left {
    left: -5%;
    top: 20%;
    transform: rotate(-15deg);
}

.hero-decoration.right {
    right: -5%;
    bottom: 20%;
    transform: rotate(15deg);
}

/* Features Section */
#features {
    background: linear-gradient(180deg, transparent, rgba(26, 26, 46, 0.5));
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.section-header p {
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.feature-card {
    background: var(--color-surface-1);
    padding: var(--space-lg);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--color-border);
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    cursor: pointer;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-glow);
    border-color: var(--color-primary);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
}

.feature-icon svg {
    width: 28px;
    height: 28px;
    color: white;
}

.feature-card h3 {
    margin-bottom: var(--space-sm);
}

.feature-card p {
    margin-bottom: 0;
    font-size: 1rem;
}

/* How It Works Section */
#how-it-works {
    background: var(--color-surface-1);
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 64px;
    height: 64px;
    background: var(--color-background);
    border: 2px solid var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin: 0 auto var(--space-md);
}

.step h3 {
    margin-bottom: var(--space-sm);
}

/* 7. COMPONENT STYLES */

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.875rem 2rem;
    border-radius: var(--border-radius-full);
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    transition: all var(--transition-base);
    text-decoration: none;
}

.btn-cta {
    background: var(--color-cta);
    color: white;
    box-shadow: 0 4px 20px rgba(244, 63, 94, 0.4);
}

.btn-cta:hover {
    background: var(--color-cta-hover);
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(244, 63, 94, 0.5);
    color: white;
}

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

.btn-primary:hover {
    background: var(--color-secondary);
    transform: translateY(-2px);
    color: white;
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--color-border);
    color: var(--color-text-secondary);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-text-primary);
    background: rgba(124, 58, 237, 0.1);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* 8. CHAT INTERFACE STYLES */
#chat-app {
    padding-top: var(--space-lg);
    padding-bottom: var(--space-2xl);
}

.chat-container {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    height: 75vh;
    min-height: 500px;
    background: var(--color-surface-1);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--color-border);
}

/* Chat Header */
.chat-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, #9333EA 100%);
    color: white;
    padding: var(--space-md) var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.chat-header-icon {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-header-icon svg {
    width: 28px;
    height: 28px;
}

.chat-header-text h2 {
    font-size: 1.25rem;
    margin-bottom: 0;
}

.chat-header-text p {
    font-size: 0.875rem;
    opacity: 0.9;
    margin: 0;
    color: rgba(255, 255, 255, 0.9);
}

/* Course Navigation */
.course-nav {
    background: var(--color-surface-2);
    color: var(--color-text-primary);
    padding: var(--space-sm) var(--space-md);
    display: none;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--color-border);
}

.course-nav.active {
    display: flex;
}

.course-nav-left {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.course-nav-btn {
    background: var(--color-surface-1);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.course-nav-btn:hover:not(:disabled) {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.course-nav-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.course-info {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.lesson-selector {
    background: var(--color-surface-1);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius-sm);
    font-size: 0.875rem;
    max-width: 200px;
    cursor: pointer;
}

.lesson-selector option {
    background: var(--color-surface-1);
    color: var(--color-text-primary);
}

/* Messages Area */
.messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-lg);
    background: var(--color-background);
}

.message {
    margin-bottom: var(--space-lg);
    animation: messageSlideIn 0.3s ease-out;
    display: flex;
    max-width: 85%;
}

@keyframes messageSlideIn {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.user {
    margin-left: auto;
    flex-direction: row-reverse;
}

.message.coach {
    gap: var(--space-sm);
}

/* Avatar */
.avatar {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.avatar svg {
    width: 20px;
    height: 20px;
    color: white;
}

.message-body {
    display: flex;
    flex-direction: column;
}

.message-content {
    padding: var(--space-md);
    border-radius: var(--border-radius-md);
    word-wrap: break-word;
    line-height: 1.7;
}

.message.user .message-content {
    background: var(--color-primary);
    color: white;
    border-bottom-right-radius: var(--space-xs);
}

.message.coach .message-content {
    background: var(--color-surface-1);
    color: var(--color-text-primary);
    border-bottom-left-radius: var(--space-xs);
    border: 1px solid var(--color-border);
}

.message-meta {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    margin-top: var(--space-sm);
    padding-left: var(--space-sm);
}

/* Coach Response Formatting */
.message.coach .message-content strong {
    color: var(--color-secondary);
}

.message.coach .response-header {
    display: block;
    color: var(--color-primary);
    font-family: var(--font-heading);
    font-size: 1.1em;
    font-weight: 700;
    margin-top: var(--space-md);
    margin-bottom: var(--space-sm);
}

.message.coach .message-content code {
    background: var(--color-background);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.9em;
    border: 1px solid var(--color-border);
}

/* Card Suit Colors */
.suit-spade { color: #9CA3AF; font-weight: bold; }
.suit-club { color: #34D399; font-weight: bold; }
.suit-diamond { color: #60A5FA; font-weight: bold; }
.suit-heart { color: #F87171; font-weight: bold; }

/* Formula styling */
.formula {
    font-family: 'SF Mono', 'Fira Code', monospace;
    background: var(--color-background);
    padding: var(--space-sm) var(--space-md);
    margin: var(--space-sm) 0;
    border-left: 3px solid var(--color-primary);
    border-radius: 4px;
    display: block;
    font-size: 0.9rem;
    overflow-x: auto;
}

/* Follow-up Questions */
.follow-up-question {
    display: inline-block;
    margin: var(--space-sm) var(--space-sm) 0 0;
    padding: var(--space-sm) var(--space-md);
    background: var(--color-surface-2);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.875rem;
}

.follow-up-question:hover {
    transform: translateY(-2px);
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

/* Feedback */
.feedback-buttons {
    margin-top: var(--space-md);
    display: flex;
    gap: var(--space-sm);
    align-items: center;
}

.feedback-btn {
    background: transparent;
    border: none;
    font-size: 1.125rem;
    cursor: pointer;
    padding: var(--space-xs);
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    opacity: 0.5;
}

.feedback-btn:hover {
    opacity: 1;
    background: var(--color-surface-2);
    transform: scale(1.1);
}

.feedback-btn.selected {
    opacity: 1;
    background: var(--color-primary);
}

.feedback-buttons > span {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

.feedback-options {
    margin-top: var(--space-md);
    padding: var(--space-md);
    background: var(--color-surface-2);
    border-radius: var(--border-radius-sm);
    border-left: 4px solid var(--color-primary);
}

.feedback-options h4 {
    margin: 0 0 var(--space-sm) 0;
    color: var(--color-primary);
    font-size: 0.875rem;
}

.feedback-option-btn {
    display: block;
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    margin: var(--space-xs) 0;
    background: var(--color-surface-1);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    text-align: left;
    font-size: 0.875rem;
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
}

.feedback-option-btn:hover {
    border-color: var(--color-primary);
    background: var(--color-surface-2);
    transform: translateX(4px);
}

.feedback-option-btn strong {
    color: var(--color-primary);
}

/* Input Area */
.input-area {
    padding: var(--space-md);
    background: var(--color-surface-1);
    border-top: 1px solid var(--color-border);
}

.input-wrapper {
    display: flex;
    gap: var(--space-sm);
    background: var(--color-background);
    padding: var(--space-xs);
    border-radius: var(--border-radius-full);
    border: 2px solid var(--color-border);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-wrapper:focus-within {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

#question-input {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    border: none;
    background: transparent;
    font-size: 1rem;
    color: var(--color-text-primary);
    outline: none;
    font-family: var(--font-body);
}

#question-input::placeholder {
    color: var(--color-text-secondary);
}

#ask-btn {
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--border-radius-full);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-body);
}

#ask-btn:hover {
    background: var(--color-secondary);
}

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

/* Controls */
.controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--space-md);
    padding: 0 var(--space-sm);
}

.controls-left {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

#status {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

.toggle-btn,
.clear-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: transparent;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-body);
}

.toggle-btn:hover,
.clear-btn:hover {
    background: var(--color-surface-2);
    color: var(--color-text-primary);
    border-color: var(--color-primary);
}

.toggle-btn.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.toggle-btn svg,
.clear-btn svg {
    width: 14px;
    height: 14px;
}

/* Loading */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    color: var(--color-text-secondary);
}

.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 9. RESPONSIVE DESIGN */
@media (max-width: 768px) {
    .hero {
        min-height: auto;
        padding-top: calc(var(--header-height) + var(--space-lg));
        padding-bottom: var(--space-xl);
    }

    .hero-content {
        padding: 0 var(--space-md);
    }

    .main-nav {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--color-surface-1);
        flex-direction: column;
        padding: var(--space-md);
        gap: var(--space-md);
        border-bottom: 1px solid var(--color-border);
    }

    .main-nav.active {
        display: flex;
    }

    .nav-toggle {
        display: block;
    }

    .chat-container {
        height: 85vh;
        border-radius: var(--border-radius-md);
    }

    .chat-header {
        padding: var(--space-md);
    }

    .controls {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }

    .controls-left {
        width: 100%;
    }

    .hero-decoration {
        display: none;
    }

    .step-number {
        width: 48px;
        height: 48px;
        font-size: 1.25rem;
    }
}

@media (max-width: 480px) {
    .toggle-btn span,
    .clear-btn span {
        display: none;
    }

    .toggle-btn,
    .clear-btn {
        padding: var(--space-sm);
    }

    .message {
        max-width: 95%;
    }
}

/* Interactive Games Section */
#interactives {
    background: var(--color-surface-1);
}

.interactives-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.interactive-card {
    background: var(--color-background);
    padding: var(--space-lg);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--color-border);
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    position: relative;
}

.interactive-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-glow);
    border-color: var(--color-primary);
}

.interactive-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
    display: block;
}

.interactive-card h3 {
    margin-bottom: var(--space-sm);
    color: var(--color-text-primary);
}

.interactive-card p {
    font-size: 0.95rem;
    margin-bottom: var(--space-md);
}

.difficulty {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--border-radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.difficulty.beginner {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success);
    border: 1px solid var(--color-success);
}

.difficulty.intermediate {
    background: rgba(245, 158, 11, 0.15);
    color: var(--color-gold);
    border: 1px solid var(--color-gold);
}

.difficulty.advanced {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-error);
    border: 1px solid var(--color-error);
}

.difficulty.all-levels {
    background: rgba(124, 58, 237, 0.15);
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.section-cta {
    text-align: center;
    padding: var(--space-xl);
    background: var(--color-background);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--color-border);
}

.section-cta p {
    font-size: 1.2rem;
    margin-bottom: var(--space-lg);
    color: var(--color-text-primary);
}

.cta-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

.cta-buttons .btn {
    min-width: 200px;
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .interactives-grid {
        grid-template-columns: 1fr;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}