/* ===== CSS RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Modern Color Palette */
    --primary: #6C63FF;
    --primary-dark: #5752D4;
    --primary-light: #837DFF;
    --secondary: #FF6584;
    --accent: #36D1DC;
    --success: #00D4AA;
    --warning: #FFB74D;
    --danger: #FF5252;
    --info: #29B6F6;
    
    /* Neutral Colors */
    --dark: #1A1A2E;
    --dark-light: #2D3047;
    --light: #FFFFFF;
    --light-dark: #F8F9FA;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6C63FF 0%, #36D1DC 100%);
    --gradient-secondary: linear-gradient(135deg, #FF6584 0%, #FF9A9E 100%);
    --gradient-accent: linear-gradient(135deg, #43E97B 0%, #38F9D7 100%);
    --gradient-warning: linear-gradient(135deg, #FA709A 0%, #FEE140 100%);
    --gradient-dark: linear-gradient(135deg, #1A1A2E 0%, #16213E 100%);
    
    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-2xl: 0 50px 100px -20px rgba(0, 0, 0, 0.3);
    
    /* Glass Effects */
    --glass-bg: rgba(255, 255, 255, 0.9);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
}

/* Dark Mode Variables */
.dark-mode {
    --dark: #F8F9FA;
    --light: #1A1A2E;
    --light-dark: #2D3047;
    --glass-bg: rgba(26, 26, 46, 0.9);
    --glass-border: rgba(255, 255, 255, 0.1);
}

/* ===== BASE STYLES ===== */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--light);
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
    transition: var(--transition-normal);
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    line-height: 1.2;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== PRELOADER ===== */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--light);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.preloader.fade-out {
    opacity: 0;
    pointer-events: none;
}

.loader {
    text-align: center;
}

.rocket {
    font-size: 4rem;
    color: var(--primary);
    margin-bottom: var(--space-lg);
    animation: rocketLaunch 2s infinite;
}

@keyframes rocketLaunch {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

.loading-text {
    font-size: 1.25rem;
    color: var(--gray-600);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* ===== HEADER ===== */
.glass-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 1000;
    padding: var(--space-sm) 0;
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
}

.logo-text {
    display: flex;
    align-items: baseline;
    gap: 2px;
}

.logo-primary {
    font-family: 'Poppins', sans-serif;
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--dark);
}

.logo-secondary {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    font-size: 1.5rem;
    color: var(--primary);
}

.logo-badge {
    background: var(--gradient-accent);
    color: white;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    margin-left: 4px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    list-style: none;
}

.nav-link {
    text-decoration: none;
    color: var(--gray-600);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    background: rgba(108, 99, 255, 0.1);
    color: var(--primary);
}

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

.btn-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--gray-100);
    border: none;
    color: var(--gray-600);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

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

.btn-chat {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--gradient-primary);
    color: white;
    padding: 10px 20px;
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.btn-chat:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.mobile-menu {
    display: none;
    font-size: 1.5rem;
    color: var(--dark);
    cursor: pointer;
}

/* ===== HERO SECTION ===== */
.hero {
    padding: 180px 0 100px;
    position: relative;
    overflow: hidden;
    background: var(--light);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero-badges {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
}

.badge {
    background: var(--gradient-accent);
    color: white;
    padding: 8px 16px;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
}

.hero-title {
    font-size: 4rem;
    margin-bottom: var(--space-lg);
    line-height: 1.1;
}

.hero-subtitle {
    display: block;
    font-size: 1.5rem;
    color: var(--gray-600);
    margin-top: var(--space-sm);
    font-weight: 400;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--gray-500);
    margin-bottom: var(--space-2xl);
    max-width: 600px;
}

.hero-actions {
    display: flex;
    gap: var(--space-lg);
    margin-bottom: var(--space-3xl);
}

.btn-primary {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--gradient-primary);
    color: white;
    padding: 16px 32px;
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.125rem;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.btn-secondary {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--light-dark);
    color: var(--dark);
    padding: 16px 32px;
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.125rem;
    transition: var(--transition-normal);
    border: 2px solid var(--gray-200);
}

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

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
    margin-top: var(--space-3xl);
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-xs);
}

.stat-label {
    color: var(--gray-600);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-visual {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 40%;
    height: 100%;
}

.floating-elements {
    position: relative;
    width: 100%;
    height: 100%;
}

.floating-card {
    position: absolute;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: var(--shadow-lg);
    animation: float 3s infinite ease-in-out;
}

.floating-card i {
    font-size: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.card-1 {
    top: 20%;
    right: 10%;
    animation-delay: 0s;
}

.card-2 {
    top: 50%;
    right: 20%;
    animation-delay: 1s;
}

.card-3 {
    top: 80%;
    right: 15%;
    animation-delay: 2s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

#particles-js {
    position: absolute;
    width: 100%;
    height: 100%;
}

/* ===== CHATBOT STYLES ===== */
.chatbot-container {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 380px;
    height: 600px;
    background: var(--light);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    border: 1px solid var(--gray-200);
    z-index: 1001;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: translateY(20px);
    opacity: 0;
    transition: all var(--transition-normal);
    visibility: hidden;
}

.chatbot-container.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.chatbot-container.minimized {
    height: 60px;
    overflow: hidden;
}

.chatbot-header {
    background: var(--gradient-primary);
    color: white;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.chatbot-avatar {
    width: 40px;
    height: 40px;
    background: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.25rem;
}

.chatbot-info {
    flex: 1;
}

.chatbot-info h4 {
    font-size: 1.125rem;
    margin-bottom: 2px;
}

.chatbot-info p {
    font-size: 0.875rem;
    opacity: 0.9;
}

.chatbot-controls {
    display: flex;
    gap: 8px;
}

.chatbot-minimize,
.chatbot-close {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.chatbot-minimize:hover,
.chatbot-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

.chatbot-body {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    background: var(--light-dark);
}

.chat-welcome {
    text-align: center;
    margin-bottom: 20px;
}

.welcome-message p {
    margin-bottom: 20px;
    color: var(--gray-600);
}

.quick-questions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 20px;
}

.quick-question {
    padding: 10px;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
    text-align: left;
    font-size: 0.875rem;
}

.quick-question:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.chat-messages {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.message {
    max-width: 80%;
    padding: 12px 16px;
    border-radius: 18px;
    animation: messageIn 0.3s ease;
}

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

.message.user {
    align-self: flex-end;
    background: var(--primary);
    color: white;
    border-bottom-right-radius: 4px;
}

.message.bot {
    align-self: flex-start;
    background: white;
    color: var(--gray-800);
    border: 1px solid var(--gray-200);
    border-bottom-left-radius: 4px;
}

.chatbot-input {
    padding: 20px;
    border-top: 1px solid var(--gray-200);
    background: white;
}

.input-container {
    display: flex;
    gap: 10px;
    margin-bottom: 8px;
}

#chatInput {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    transition: var(--transition-fast);
}

#chatInput:focus {
    outline: none;
    border-color: var(--primary);
}

#sendMessage {
    width: 45px;
    height: 45px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    color: white;
    border: none;
    cursor: pointer;
    transition: var(--transition-fast);
}

#sendMessage:hover {
    transform: scale(1.1);
}

.voice-btn {
    width: 45px;
    height: 45px;
    border-radius: var(--radius-full);
    background: var(--gray-100);
    color: var(--gray-600);
    border: none;
    cursor: pointer;
    transition: var(--transition-fast);
}

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

.input-hint {
    font-size: 0.75rem;
    color: var(--gray-500);
    display: flex;
    align-items: center;
    gap: 4px;
}

.chat-trigger {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-xl);
    z-index: 1000;
    transition: var(--transition-normal);
}

.chat-trigger:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-2xl);
}

.chat-notification {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 20px;
    height: 20px;
    background: var(--secondary);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: pulse 2s infinite;
}

/* ===== SECTIONS COMMON STYLES ===== */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--space-3xl);
}

.section-subtitle {
    display: inline-block;
    color: var(--primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.875rem;
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: 3rem;
    margin-bottom: var(--space-lg);
}

.section-description {
    font-size: 1.125rem;
    color: var(--gray-600);
}

/* ===== FEATURES SECTION ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--light);
    border-radius: var(--radius-xl);
    padding: 40px 30px;
    border: 1px solid var(--gray-200);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-normal);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    margin-bottom: 24px;
}

.icon-wrapper {
    width: 70px;
    height: 70px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: white;
}

.gradient-1 {
    background: var(--gradient-primary);
}

.gradient-2 {
    background: var(--gradient-secondary);
}

.gradient-3 {
    background: var(--gradient-accent);
}

.gradient-4 {
    background: var(--gradient-warning);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.feature-card p {
    color: var(--gray-600);
    margin-bottom: 20px;
}

.feature-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tag {
    background: var(--gray-100);
    color: var(--gray-700);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
}

/* ===== ADVICE SECTION ===== */
.advice-section {
    background: var(--light-dark);
}

.advice-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    margin-bottom: 60px;
}

.category-card {
    background: white;
    padding: 30px;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition-normal);
    border: 2px solid transparent;
}

.category-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
}

.category-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    margin: 0 auto 20px;
}

.category-card h3 {
    margin-bottom: 12px;
}

.category-card p {
    color: var(--gray-600);
    font-size: 0.875rem;
    margin-bottom: 16px;
}

.category-count {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.875rem;
}

.featured-advice {
    background: white;
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

.advice-badge {
    display: inline-block;
    background: var(--gradient-accent);
    color: white;
    padding: 6px 16px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.advice-card.featured h3 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.advice-card.featured p {
    color: var(--gray-600);
    margin-bottom: 30px;
    font-size: 1.125rem;
    line-height: 1.7;
}

.advice-meta {
    display: flex;
    align-items: center;
    gap: 16px;
}

.expert-avatar {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    overflow: hidden;
}

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

.meta-info {
    flex: 1;
}

.expert-name {
    display: block;
    font-weight: 600;
    margin-bottom: 4px;
}

.advice-date {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.bookmark-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--gray-100);
    border: none;
    color: var(--gray-600);
    cursor: pointer;
    transition: var(--transition-fast);
}

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

/* ===== EXPERTS SECTION ===== */
.experts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.expert-card {
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-normal);
}

.expert-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.expert-image {
    height: 200px;
    position: relative;
    overflow: hidden;
}

.expert-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-normal);
}

.expert-card:hover .expert-image img {
    transform: scale(1.1);
}

.expert-status {
    position: absolute;
    bottom: 20px;
    right: 20px;
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    border: 2px solid white;
}

.expert-status.online {
    background: var(--success);
}

.expert-status.busy {
    background: var(--warning);
}

.expert-social {
    position: absolute;
    bottom: 20px;
    left: 20px;
    display: flex;
    gap: 8px;
}

.expert-social a {
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition-fast);
}

.expert-social a:hover {
    background: var(--primary);
    color: white;
}

.expert-info {
    padding: 30px;
}

.expert-info h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.expert-title {
    color: var(--primary);
    font-weight: 500;
    margin-bottom: 16px;
}

.expert-stats {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    font-size: 0.875rem;
    color: var(--gray-600);
}

.expert-stats i {
    margin-right: 4px;
}

.expert-specialties {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.specialty {
    background: var(--gray-100);
    color: var(--gray-700);
    padding: 6px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
}

.btn-mentor {
    width: 100%;
    padding: 12px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-mentor:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ===== NEWSLETTER ===== */
.newsletter-card {
    background: var(--gradient-dark);
    border-radius: var(--radius-2xl);
    padding: 60px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    color: white;
    box-shadow: var(--shadow-xl);
}

.newsletter-content h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.newsletter-content p {
    opacity: 0.9;
    margin-bottom: 30px;
    font-size: 1.125rem;
}

.newsletter-form {
    margin-bottom: 30px;
}

.input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
}

.input-group input {
    flex: 1;
    padding: 16px 24px;
    border-radius: var(--radius-full);
    border: none;
    font-size: 1rem;
}

.input-group input:focus {
    outline: none;
}

.input-group button {
    padding: 16px 32px;
    background: var(--gradient-accent);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-normal);
}

.input-group button:hover {
    transform: translateY(-2px);
}

.form-check {
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-check input {
    width: 18px;
    height: 18px;
}

.form-check label {
    font-size: 0.875rem;
    opacity: 0.8;
}

.trust-badges {
    display: flex;
    gap: 24px;
    font-size: 0.875rem;
    opacity: 0.8;
}

.trust-badges i {
    margin-right: 4px;
}

.newsletter-visual {
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    margin: 0 auto;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--dark);
    color: white;
    padding: 80px 0 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand .logo {
    margin-bottom: 24px;
}

.footer-description {
    opacity: 0.8;
    margin-bottom: 30px;
    line-height: 1.8;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.1);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: var(--transition-fast);
}

.social-link:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.link-column h4 {
    font-size: 1.125rem;
    margin-bottom: 24px;
}

.link-column ul {
    list-style: none;
}

.link-column li {
    margin-bottom: 12px;
}

.link-column a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition-fast);
}

.link-column a:hover {
    color: white;
    padding-left: 4px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.875rem;
    opacity: 0.8;
}

.footer-legal {
    display: flex;
    gap: 24px;
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-legal a:hover {
    color: white;
}

/* ===== BACK TO TOP ===== */
.back-to-top {
    position: fixed;
    bottom: 100px;
    left: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .newsletter-card {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    
    .nav-links {
        display: none;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .hero {
        padding: 140px 0 60px;
    }
    
    .hero-visual {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .experts-grid {
        grid-template-columns: 1fr;
    }
    
    .chatbot-container {
        width: calc(100% - 40px);
        right: 20px;
        bottom: 80px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
    }
    
    .features-grid,
    .advice-categories {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}