/* 🌟 Watnedal.no - Modern Norwegian Portfolio with AI Chat Integration */

/* CSS Variables - Norsk-inspirert fargepalett */
:root {
    /* Primære farger - Inspirert av norsk natur */
    --primary-color: #2c3e50;    /* Dyp blå-grå som norske fjorder */
    --secondary-color: #3498db;   /* Klar blå som nordlys */
    --accent-color: #e74c3c;      /* Rødt aksent som norsk flagg */
    --success-color: #27ae60;     /* Grønn som norsk skog */
    --warning-color: #f39c12;     /* Orange som høstløv */
    --danger-color: #e74c3c;      /* Rødt for feil */
    
    /* Tekst og bakgrunn */
    --text-primary: #2c3e50;      /* Hovedtekst */
    --text-secondary: #7f8c8d;    /* Sekundær tekst */
    --text-light: #bdc3c7;        /* Lys tekst */
    --text-white: #ffffff;        /* Hvit tekst */
    --bg-primary: #ffffff;        /* Hvit bakgrunn */
    --bg-secondary: #f8f9fa;      /* Lys grå bakgrunn */
    --bg-dark: #2c3e50;          /* Mørk bakgrunn */
    --bg-light: #ecf0f1;         /* Svært lys grå */
    
    /* Chat-spesifikke farger */
    --chat-bg: #ffffff;
    --chat-user: #3498db;
    --chat-assistant: #ecf0f1;
    --chat-border: #e9ecef;
    
    /* Skygger */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.1);
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 3rem;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Typography */
    --font-primary: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
}

/* Reset og base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--space-md);
    color: var(--primary-color);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--space-md);
    line-height: 1.7;
}

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

a:hover, a:focus {
    color: var(--primary-color);
    outline: 2px solid transparent;
}

/* Lists */
ul, ol {
    margin-bottom: var(--space-md);
    padding-left: var(--space-lg);
}

li {
    margin-bottom: var(--space-xs);
}

/* Utility classes */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Skip navigation for accessibility */
.skip-nav {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-color);
    color: var(--text-white);
    padding: 8px 16px;
    text-decoration: none;
    z-index: 10000;
    border-radius: var(--radius-md);
    transition: top var(--transition-normal);
}

.skip-nav:focus {
    top: 6px;
}

/* Navigation */
.navbar {
    background: var(--bg-primary);
    box-shadow: var(--shadow-md);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: all var(--transition-normal);
    border-bottom: 1px solid var(--bg-light);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    transition: all var(--transition-fast);
}

.nav-logo:hover, .nav-logo:focus {
    color: var(--secondary-color);
    transform: translateY(-1px);
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
}

.nav-item {
    position: relative;
}

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

.nav-link:hover, .nav-link:focus {
    background-color: var(--bg-light);
    color: var(--secondary-color);
}

/* Dropdown menu */
.dropdown {
    position: relative;
}

.dropdown-arrow {
    font-size: 0.75rem;
    margin-left: var(--space-xs);
    transition: transform var(--transition-fast);
}

.dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-content {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-primary);
    min-width: 220px;
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    z-index: 1001;
    border: 1px solid var(--bg-light);
}

.dropdown:hover .dropdown-content {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    color: var(--text-primary);
    border-bottom: 1px solid var(--bg-light);
    transition: background-color var(--transition-fast);
}

.dropdown-link:last-child {
    border-bottom: none;
}

.dropdown-link:hover, .dropdown-link:focus {
    background-color: var(--bg-light);
    color: var(--secondary-color);
}

/* Mobile menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: var(--space-sm);
    background: none;
    border: none;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.hamburger:hover, .hamburger:focus {
    background-color: var(--bg-light);
    outline: 2px solid var(--secondary-color);
}

.hamburger .bar {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    margin: 3px 0;
    transition: all var(--transition-fast);
    border-radius: 2px;
}

.hamburger.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active .bar:nth-child(2) {
    opacity: 0;
}

.hamburger.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--text-white);
    padding: calc(80px + var(--space-xl)) 0 var(--space-xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><polygon fill="rgba(255,255,255,0.05)" points="0,1000 1000,800 1000,1000"/></svg>');
    background-size: cover;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: var(--space-md);
    animation: fadeInUp 1s ease;
    font-weight: 700;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    margin-bottom: var(--space-xl);
    opacity: 0.95;
    animation: fadeInUp 1s ease 0.2s both;
    line-height: 1.5;
}

.hero-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.4s both;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-md) var(--space-xl);
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transition: all var(--transition-normal);
    transform: translate(-50%, -50%);
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

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

.btn-primary:hover, .btn-primary:focus {
    background: #2980b9;
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover, .btn-secondary:focus {
    background: var(--text-white);
    color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-sm {
    padding: var(--space-sm) var(--space-lg);
    font-size: 0.875rem;
}

.btn-icon {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--space-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover, .btn-icon:focus {
    background: var(--bg-light);
    color: var(--primary-color);
    transform: scale(1.1);
}

/* Sections */
section {
    padding: var(--space-xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-xl);
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--primary-color);
    position: relative;
    font-weight: 700;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
    border-radius: 2px;
}

.section-description {
    text-align: center;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto var(--space-xl) auto;
    font-size: 1.125rem;
    line-height: 1.6;
}

/* CV Section */
.cv-section {
    background: var(--bg-primary);
}

.cv-content {
    max-width: 1000px;
    margin: 0 auto;
}

.cv-preview {
    background: var(--bg-light);
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--space-lg);
    text-align: center;
}

.cv-placeholder {
    max-width: 600px;
    margin: 0 auto;
}

.cv-icon {
    font-size: 4rem;
    color: var(--secondary-color);
    margin-bottom: var(--space-lg);
}

.cv-placeholder h3 {
    font-size: 1.75rem;
    margin-bottom: var(--space-md);
    color: var(--primary-color);
}

.cv-placeholder p {
    font-size: 1.1rem;
    margin-bottom: var(--space-lg);
    color: var(--text-secondary);
}

.cv-placeholder ul {
    text-align: left;
    max-width: 400px;
    margin: 0 auto var(--space-lg) auto;
}

.cv-placeholder li {
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    font-weight: 500;
}

.cv-actions {
    text-align: center;
}

/* Chat Section */
.chat-section {
    background: var(--bg-secondary);
}

.chat-container {
    max-width: 900px;
    margin: 0 auto;
    background: var(--chat-bg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--chat-border);
}

.chat-header {
    background: var(--primary-color);
    color: var(--text-white);
    padding: var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-status {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 600;
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    transition: all var(--transition-normal);
}

.status-indicator.ready { 
    background: var(--success-color); 
    box-shadow: 0 0 10px rgba(39, 174, 96, 0.5);
}

.status-indicator.thinking { 
    background: var(--warning-color); 
    animation: pulse 1.5s infinite;
}

.status-indicator.error { 
    background: var(--danger-color);
    box-shadow: 0 0 10px rgba(231, 76, 60, 0.5);
}

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

.chat-controls .btn-icon {
    color: var(--text-white);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.chat-controls .btn-icon:hover, .chat-controls .btn-icon:focus {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.chat-messages {
    height: 450px;
    overflow-y: auto;
    padding: var(--space-lg);
    background: linear-gradient(to bottom, #fafbfc, #f8f9fa);
    scroll-behavior: smooth;
}

.chat-messages::-webkit-scrollbar {
    width: 8px;
}

.chat-messages::-webkit-scrollbar-track {
    background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: var(--text-light);
    border-radius: 4px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

.message {
    display: flex;
    margin-bottom: var(--space-lg);
    animation: fadeInUp 0.4s ease;
}

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

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

.message-avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    margin: 0 var(--space-sm);
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}

.assistant-message .message-avatar {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-white);
}

.user-message .message-avatar {
    background: linear-gradient(135deg, var(--chat-user), #2980b9);
    color: var(--text-white);
    order: 1;
}

.message-content {
    max-width: 70%;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    font-size: 0.95rem;
    line-height: 1.6;
    position: relative;
}

.assistant-message .message-content {
    background: var(--bg-primary);
    border: 1px solid var(--chat-border);
    border-bottom-left-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
}

.user-message .message-content {
    background: linear-gradient(135deg, var(--chat-user), #2980b9);
    color: var(--text-white);
    border-bottom-right-radius: var(--radius-sm);
    order: 0;
    box-shadow: var(--shadow-sm);
}

.message-content.error {
    background: #ffeaea;
    border-color: var(--danger-color);
    color: var(--danger-color);
}

.message-time {
    font-size: 0.75rem;
    opacity: 0.7;
    margin-top: var(--space-xs);
    display: block;
}

.chat-input-container {
    background: var(--bg-primary);
    border-top: 1px solid var(--chat-border);
}

.chat-input-wrapper {
    display: flex;
    align-items: flex-end;
    padding: var(--space-lg);
    gap: var(--space-md);
}

#chat-input {
    flex: 1;
    border: 2px solid var(--chat-border);
    border-radius: var(--radius-lg);
    padding: var(--space-md) var(--space-lg);
    font-size: 1rem;
    font-family: inherit;
    resize: none;
    max-height: 120px;
    min-height: 48px;
    transition: all var(--transition-fast);
    background: var(--bg-light);
}

#chat-input:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
    background: var(--bg-primary);
}

.send-button {
    background: linear-gradient(135deg, var(--secondary-color), #2980b9);
    color: var(--text-white);
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    flex-shrink: 0;
    box-shadow: var(--shadow-md);
}

.send-button:hover:not(:disabled), .send-button:focus:not(:disabled) {
    background: linear-gradient(135deg, #2980b9, var(--secondary-color));
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

.send-button:disabled {
    background: var(--text-light);
    cursor: not-allowed;
    opacity: 0.6;
    transform: none;
}

.chat-footer {
    padding: var(--space-sm) var(--space-lg) var(--space-lg) var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.provider-info {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

#current-provider {
    font-weight: 600;
    color: var(--secondary-color);
}

.input-help {
    color: var(--text-secondary);
    font-size: 0.75rem;
}

/* Projects Section */
.projects-section {
    background: var(--bg-primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-xl);
    margin-top: var(--space-xl);
}

.project-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all var(--transition-normal);
    border: 1px solid var(--bg-light);
    position: relative;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--secondary-color);
}

.project-card.placeholder {
    border: 2px dashed var(--text-light);
    background: var(--bg-secondary);
}

.project-card.placeholder:hover {
    border-color: var(--secondary-color);
}

.project-header {
    padding: var(--space-xl);
    text-align: center;
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-secondary) 100%);
    position: relative;
}

.project-icon {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: var(--space-lg);
    transition: all var(--transition-normal);
}

.project-card:hover .project-icon {
    transform: scale(1.1);
    color: var(--primary-color);
}

.project-card.placeholder .project-icon {
    color: var(--text-light);
}

.project-header h3 {
    margin: 0;
    color: var(--primary-color);
    font-size: 1.5rem;
    font-weight: 700;
}

.project-content {
    padding: var(--space-xl);
}

.project-content p {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.tech-tag {
    background: linear-gradient(135deg, var(--bg-light), var(--bg-secondary));
    color: var(--primary-color);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid var(--chat-border);
    transition: all var(--transition-fast);
}

.tech-tag:hover {
    background: var(--secondary-color);
    color: var(--text-white);
    transform: translateY(-1px);
}

.project-actions {
    padding: 0 var(--space-xl) var(--space-xl) var(--space-xl);
}

/* About Section */
.about-section {
    background: var(--bg-secondary);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-text {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-primary);
    margin-bottom: var(--space-xl);
}

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

.skill-category {
    background: var(--bg-primary);
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

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

.skill-category h4 {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    color: var(--primary-color);
    font-size: 1.25rem;
}

.skill-category h4 i {
    color: var(--secondary-color);
    font-size: 1.5rem;
}

.skill-category ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.skill-category li {
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--bg-light);
    color: var(--text-primary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.skill-category li:last-child {
    border-bottom: none;
}

.skill-category li:hover {
    color: var(--secondary-color);
    transform: translateX(5px);
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--primary-color), #1a252f);
    color: var(--text-white);
    padding: var(--space-xl) 0 var(--space-lg) 0;
}

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

.footer-section h3 {
    margin-bottom: var(--space-lg);
    color: var(--text-white);
    font-size: 1.25rem;
    position: relative;
}

.footer-section h3::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--secondary-color);
    border-radius: 2px;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
    line-height: 1.6;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: var(--space-sm);
}

.footer-link {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    transition: all var(--transition-fast);
    padding: var(--space-xs) 0;
}

.footer-link:hover, .footer-link:focus {
    color: var(--text-white);
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--space-sm);
}

.footer-tech {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
    font-weight: 600;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes pulse {
    0%, 100% { 
        opacity: 1;
        transform: scale(1);
    }
    50% { 
        opacity: 0.5;
        transform: scale(0.95);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Scroll animations */
.animate-in {
    animation: fadeInUp 0.6s ease both;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--space-lg);
    }
    
    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    /* Navigation */
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--bg-primary);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-lg);
        z-index: 999;
        padding: var(--space-lg) 0;
        border-top: 1px solid var(--bg-light);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-item {
        margin: var(--space-sm) 0;
        width: 100%;
    }
    
    .nav-link {
        justify-content: center;
        padding: var(--space-md);
        border-radius: var(--radius-md);
        margin: 0 var(--space-md);
    }

    .hamburger {
        display: flex;
    }

    /* Dropdown on mobile */
    .dropdown-content {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: var(--bg-light);
        margin-top: var(--space-sm);
        border-radius: var(--radius-md);
    }
    
    /* Hero section */
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }

    /* Chat */
    .chat-messages {
        height: 350px;
    }
    
    .message-content {
        max-width: 85%;
    }
    
    .chat-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xs);
    }

    /* Projects */
    .projects-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .chat-container {
        margin: 0 var(--space-sm);
        border-radius: var(--radius-lg);
    }
    
    .chat-input-wrapper {
        padding: var(--space-md);
    }
    
    #chat-input {
        font-size: 16px; /* Prevent zoom on iOS */
    }

    .cv-preview {
        padding: var(--space-lg);
    }
    
    .project-header,
    .project-content,
    .project-actions {
        padding: var(--space-lg);
    }
    
    .skill-category {
        padding: var(--space-lg);
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #000000;
        --secondary-color: #0066cc;
        --text-primary: #000000;
        --bg-primary: #ffffff;
        --shadow-md: 0 4px 6px rgba(0,0,0,0.3);
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .hero-section::before {
        animation: none;
    }
}

/* Dark mode preparation */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #e4e6ea;
        --text-secondary: #b0b3b8;
        --bg-primary: #242526;
        --bg-secondary: #18191a;
        --bg-light: #3a3b3c;
        --chat-border: #3a3b3c;
    }
}

/* Print styles */
@media print {
    .navbar,
    .chat-section,
    .hamburger,
    .btn {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .hero-section {
        background: white;
        color: black;
        padding: var(--space-lg) 0;
    }
    
    .section-title::after {
        display: none;
    }
}