/* ========================================
   DANIEL DOES STUFF - PORTFOLIO STYLES
   ======================================== */

/* ========================================
   CSS CUSTOM PROPERTIES (VARIABLES)
   ======================================== */
:root {
    /* Colors - Baby Blue & White Theme */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f0f7ff;
    --color-bg-tertiary: #e6f2ff;
    --color-bg-card: #ffffff;
    --color-bg-elevated: #f8fbff;
    
    /* Accent Colors - Baby Blue */
    --color-accent-primary: #5ba4e6;
    --color-accent-secondary: #89cff0;
    --color-accent-tertiary: #3d8bd4;
    --color-accent-gradient: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
    
    /* Text Colors */
    --color-text-primary: #1a2b3c;
    --color-text-secondary: #4a5d6f;
    --color-text-tertiary: #6b7d8f;
    --color-text-muted: #9baab8;
    
    /* Border Colors */
    --color-border: #d4e5f7;
    --color-border-hover: #b8d4ef;
    
    /* Status Colors */
    --color-success: #4eca7a;
    --color-error: #e85d5d;
    --color-warning: #f0a830;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Fira Code', 'Consolas', monospace;
    
    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --text-4xl: 2.5rem;
    --text-5xl: 3.5rem;
    --text-6xl: 4.5rem;
    
    /* 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;
    --space-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(91, 164, 230, 0.1);
    --shadow-md: 0 4px 12px rgba(91, 164, 230, 0.15);
    --shadow-lg: 0 8px 24px rgba(91, 164, 230, 0.2);
    --shadow-glow: 0 0 20px rgba(91, 164, 230, 0.25);
    --shadow-glow-lg: 0 0 40px rgba(91, 164, 230, 0.35);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Z-Index Scale */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
    --z-tooltip: 500;
    
    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

/* ========================================
   DARK MODE THEME OVERRIDE
   ======================================== */
[data-theme="dark"] {
    --color-bg-primary: #0a0a0f;
    --color-bg-secondary: #121218;
    --color-bg-tertiary: #1a1a24;
    --color-bg-card: #16161e;
    --color-bg-elevated: #1e1e28;
    
    --color-accent-primary: #89cff0;
    --color-accent-secondary: #5ba4e6;
    --color-accent-tertiary: #a8dcf5;
    
    --color-text-primary: #ffffff;
    --color-text-secondary: #b4c4d4;
    --color-text-tertiary: #7b8b9b;
    --color-text-muted: #4a5a6a;
    
    --color-border: #2a3a4a;
    --color-border-hover: #3a4a5a;
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(137, 207, 240, 0.3);
    --shadow-glow-lg: 0 0 40px rgba(137, 207, 240, 0.4);
}

[data-theme="dark"] .navbar.scrolled {
    background: rgba(10, 10, 15, 0.95);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    overflow-x: hidden;
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Selection styling */
::selection {
    background-color: var(--color-accent-primary);
    color: var(--color-bg-primary);
}

/* Focus styles for accessibility */
:focus-visible {
    outline: 2px solid var(--color-accent-primary);
    outline-offset: 2px;
}

/* Links */
a {
    color: var(--color-accent-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent-secondary);
}

/* Images */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Lists */
ul, ol {
    list-style: none;
}

/* ========================================
   ANIMATED BACKGROUND CANVAS
   ======================================== */
#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

/* ========================================
   CONTAINER & LAYOUT
   ======================================== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding: var(--space-4xl) 0;
    position: relative;
}

/* ========================================
   NAVIGATION
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    padding: var(--space-md) 0;
    background: transparent;
    transition: background-color var(--transition-base), padding var(--transition-base), backdrop-filter var(--transition-base);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: var(--space-sm) 0;
    box-shadow: 0 1px 0 var(--color-border);
}

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

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

.logo-text {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    letter-spacing: -0.5px;
}

.logo-accent {
    color: var(--color-accent-primary);
}

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

.nav-link {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    padding: var(--space-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent-gradient);
    transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: var(--z-fixed);
}

.hamburger {
    position: relative;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: background var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: transform var(--transition-base);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

.nav-toggle[aria-expanded="true"] .hamburger {
    background: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
    transform: translateY(8px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
    transform: translateY(-8px) rotate(-45deg);
}

/* Theme Toggle Button */
.theme-toggle {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    cursor: pointer;
    overflow: hidden;
    transition: background-color var(--transition-base), border-color var(--transition-base), transform var(--transition-fast);
    margin-left: var(--space-md);
}

.theme-toggle:hover {
    background: var(--color-bg-elevated);
    border-color: var(--color-accent-primary);
    transform: scale(1.05);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-icon {
    position: absolute;
    width: 22px;
    height: 22px;
    color: var(--color-accent-primary);
    transition: transform 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55), opacity 0.3s ease;
}

.theme-icon.sun {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

.theme-icon.moon {
    opacity: 0;
    transform: rotate(-90deg) scale(0.5);
}

[data-theme="dark"] .theme-icon.sun {
    opacity: 0;
    transform: rotate(90deg) scale(0.5);
}

[data-theme="dark"] .theme-icon.moon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

/* Theme Transition Overlay */
.theme-transition-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
}

.theme-transition-circle {
    position: absolute;
    border-radius: 50%;
    transform: scale(0);
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-transition-circle.expanding {
    transform: scale(1);
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-primary);
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

.btn-primary {
    background: var(--color-accent-gradient);
    color: var(--color-bg-primary);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-lg);
    color: var(--color-bg-primary);
}

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

.btn-secondary:hover {
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
}

.btn-ghost {
    background: transparent;
    color: var(--color-accent-primary);
    padding: var(--space-md) var(--space-lg);
}

.btn-ghost:hover {
    background: rgba(0, 255, 153, 0.1);
}

.btn-full {
    width: 100%;
}

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

.btn:hover .btn-icon {
    transform: translateX(4px);
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--space-4xl) var(--container-padding);
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: var(--container-max);
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
}

.hero-greeting {
    font-size: var(--text-lg);
    color: var(--color-accent-primary);
    font-weight: 500;
    margin-bottom: var(--space-sm);
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
    animation-delay: 0.2s;
}

.hero-name {
    font-size: clamp(var(--text-4xl), 8vw, var(--text-6xl));
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
}

.name-line {
    display: block;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}

.name-line:first-child {
    animation-delay: 0.3s;
}

.name-line.accent {
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation-delay: 0.4s;
}

.hero-tagline {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
    animation-delay: 0.5s;
}

.tagline-separator {
    color: var(--color-text-muted);
}

.hero-description {
    font-size: var(--text-lg);
    color: var(--color-text-tertiary);
    max-width: 500px;
    margin-bottom: var(--space-xl);
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
    animation-delay: 0.6s;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
    animation-delay: 0.7s;
}

/* Hero Visual - Code Window */
.hero-visual {
    display: flex;
    justify-content: center;
    opacity: 0;
    animation: fadeInRight 0.8s ease forwards;
    animation-delay: 0.8s;
}

.code-window {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    max-width: 400px;
    width: 100%;
    transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
    transition: transform var(--transition-slow);
}

.code-window:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.code-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border);
}

.code-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.code-dot.red { background: #ff5f57; }
.code-dot.yellow { background: #febc2e; }
.code-dot.green { background: #28c840; }

.code-title {
    margin-left: auto;
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    font-family: var(--font-mono);
}

.code-content {
    padding: var(--space-lg);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    line-height: 1.8;
    overflow-x: auto;
    background: var(--color-bg-tertiary);
}

/* Light mode code syntax - darker colors for readability */
.code-keyword { color: #d63384; }
.code-variable { color: #1a2b3c; }
.code-property { color: #0969da; }
.code-string { color: #0a7d46; }
.code-method { color: #8250df; }

/* Dark mode code syntax - brighter colors */
[data-theme="dark"] .code-keyword { color: #ff79c6; }
[data-theme="dark"] .code-variable { color: #f8f8f2; }
[data-theme="dark"] .code-property { color: #8be9fd; }
[data-theme="dark"] .code-string { color: #f1fa8c; }
[data-theme="dark"] .code-method { color: #50fa7b; }

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-tertiary);
    opacity: 0;
    animation: fadeIn 0.6s ease forwards;
    animation-delay: 1.2s;
}

.scroll-text {
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.scroll-arrow {
    animation: bounce 2s ease-in-out infinite;
}

/* ========================================
   SECTION HEADERS
   ======================================== */
.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-label {
    display: inline-block;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-accent-primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: clamp(var(--text-3xl), 5vw, var(--text-4xl));
    font-weight: 700;
    margin-bottom: var(--space-md);
    background: linear-gradient(135deg, var(--color-text-primary), var(--color-text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-description {
    font-size: var(--text-lg);
    color: var(--color-text-tertiary);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   ABOUT SECTION
   ======================================== */
.about {
    background: var(--color-bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: var(--space-4xl);
    align-items: start;
}

.about-image {
    position: sticky;
    top: 100px;
}

.image-wrapper {
    position: relative;
}

.profile-placeholder {
    width: 100%;
    aspect-ratio: 1;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
}

.profile-image {
    width: 100%;
    object-fit: contain;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: var(--color-bg-tertiary);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.image-decoration {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 100%;
    height: 100%;
    border: 2px solid var(--color-accent-primary);
    border-radius: var(--radius-lg);
    z-index: -1;
    opacity: 0.5;
    transition: transform var(--transition-base), opacity var(--transition-base), border-color var(--transition-base);
}

.image-wrapper:hover .profile-image {
    transform: translate(-5px, -5px) scale(1.02);
    box-shadow: var(--shadow-md);
}

.image-wrapper:hover .image-decoration {
    transform: translate(5px, 5px) scale(1.02);
    opacity: 0.8;
    border-color: var(--color-accent-secondary);
    background: rgba(137, 207, 240, 0.15);
}

.about-subtitle {
    font-size: var(--text-2xl);
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: var(--color-text-primary);
}

.about-text {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.8;
}

.about-highlights {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin: var(--space-2xl) 0;
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.highlight-item {
    text-align: center;
}

.highlight-number {
    display: block;
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-accent-primary);
    line-height: 1;
    margin-bottom: var(--space-sm);
}

.highlight-label {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

.about-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
}

/* ========================================
   PROJECTS SECTION
   ======================================== */
.projects {
    background: var(--color-bg-primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-xl);
}

.project-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

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

.project-image {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
}

.image-placeholder {
    width: 100%;
    height: 100%;
    background: var(--color-bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    transition: transform var(--transition-slow);
}

.project-card:hover .image-placeholder {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--color-bg-elevated);
    border-radius: 50%;
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
}

.project-link:hover {
    background: var(--color-accent-primary);
    color: var(--color-bg-primary);
    transform: scale(1.1);
}

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

.project-category {
    display: inline-block;
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-accent-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-sm);
}

.project-title {
    font-size: var(--text-xl);
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--color-text-primary);
}

.project-description {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

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

.project-tech li {
    font-size: var(--text-xs);
    font-family: var(--font-mono);
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
}

/* Projects Loading State */
.projects-loading {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-4xl);
    color: var(--color-text-tertiary);
    gap: var(--space-lg);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Show More Projects Button */
.projects-show-more-container {
    display: flex;
    justify-content: center;
    margin-top: var(--space-2xl);
}

.projects-show-more {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
}

.projects-show-more .show-more-icon {
    transition: transform var(--transition-base);
}

.projects-show-more.expanded .show-more-icon {
    transform: rotate(180deg);
}

/* Hidden Project Cards */
.project-card.hidden-project {
    display: none;
    opacity: 0;
    transform: translateY(30px);
}

.project-card.revealed {
    display: block;
    animation: slideInUp 0.4s ease forwards;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.project-thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-thumbnail {
    transform: scale(1.05);
}

.placeholder-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: var(--color-text-muted);
}

/* ========================================
   SKILLS SECTION
   ======================================== */
.skills {
    background: var(--color-bg-secondary);
}

.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-2xl);
}

.skill-category {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    border: 1px solid var(--color-border);
}

.category-title {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--space-xl);
    color: var(--color-text-primary);
}

.category-title svg {
    color: var(--color-accent-primary);
}

.skills-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.skill-item {
    display: grid;
    grid-template-columns: 60px 90px 1fr;
    align-items: center;
    gap: var(--space-md);
}

.skill-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xs);
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--color-accent-primary);
    background: rgba(91, 164, 230, 0.15);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    text-align: center;
    white-space: nowrap;
    min-width: 55px;
    height: 32px;
}

[data-theme="dark"] .skill-icon {
    background: rgba(137, 207, 240, 0.15);
}

.skill-name {
    display: flex;
    align-items: center;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
}

.skill-bar {
    height: 6px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: var(--color-accent-gradient);
    border-radius: var(--radius-full);
    width: 0;
    transition: width 1s ease-out;
}

.skill-item.animate .skill-progress {
    width: var(--progress);
}

/* Confidence-based progress bar colors */
.skill-progress[data-confidence="high"] {
    background: linear-gradient(135deg, #4eca7a, #3db36a);
}

.skill-progress[data-confidence="medium"] {
    background: linear-gradient(135deg, #f0d830, #e8c83a);
}

.skill-progress[data-confidence="low"] {
    background: linear-gradient(135deg, #f0a830, #e8983a);
}

.skill-progress[data-confidence="very-low"] {
    background: linear-gradient(135deg, #e85d5d, #d44a4a);
}

/* Focusing star indicator */
.skill-focusing-star {
    color: var(--color-accent-primary);
    margin-left: var(--space-xs);
    vertical-align: middle;
    animation: starPulse 2s ease-in-out infinite;
}

@keyframes starPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.1); }
}

/* Skills loading state */
.skills-loading {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-3xl);
    color: var(--color-text-muted);
}

.skills-error {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--space-2xl);
    color: var(--color-error);
}

.skills-disclaimer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-xl);
    padding: var(--space-md) var(--space-lg);
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.skills-disclaimer-star {
    color: var(--color-accent-primary);
    flex-shrink: 0;
}

/* ========================================
   CONTACT SECTION
   ======================================== */
.contact {
    background: var(--color-bg-secondary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-4xl);
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.info-card {
    display: flex;
    align-items: start;
    gap: var(--space-lg);
    padding: var(--space-xl);
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: border-color var(--transition-fast);
}

.info-card:hover {
    border-color: var(--color-accent-primary);
}

.info-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: rgba(91, 164, 230, 0.15);
    border-radius: var(--radius-md);
    color: var(--color-accent-primary);
    flex-shrink: 0;
}

[data-theme="dark"] .info-icon {
    background: rgba(137, 207, 240, 0.15);
}

.info-content h3 {
    font-size: var(--text-base);
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--color-text-primary);
}

.info-content a,
.info-content p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.social-links {
    padding: var(--space-xl);
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.social-links h3 {
    font-size: var(--text-base);
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: var(--color-text-primary);
}

.social-icons {
    display: flex;
    gap: var(--space-md);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--color-accent-primary);
    color: var(--color-bg-primary);
    transform: translateY(-2px);
}

/* Contact Form */
.contact-form {
    background: var(--color-bg-card);
    padding: var(--space-2xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

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

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

.form-input {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    font-family: var(--font-primary);
    font-size: var(--text-base);
    color: var(--color-text-primary);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

.form-input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 255, 153, 0.1);
}

.form-input.error {
    border-color: var(--color-error);
}

.form-textarea {
    resize: vertical;
    min-height: 150px;
}

.form-error {
    display: block;
    font-size: var(--text-xs);
    color: var(--color-error);
    margin-top: var(--space-sm);
    min-height: 1.2em;
}

.form-status {
    margin-top: var(--space-lg);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    text-align: center;
    display: none;
}

.form-status.success {
    display: block;
    background: rgba(0, 255, 153, 0.1);
    color: var(--color-success);
    border: 1px solid var(--color-success);
}

.form-status.error {
    display: block;
    background: rgba(255, 68, 102, 0.1);
    color: var(--color-error);
    border: 1px solid var(--color-error);
}

/* ========================================
   PROJECT MODAL
   ======================================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

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

.modal-container {
    position: relative;
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    max-width: 900px;
    width: 100%;
    max-height: 85vh;
    overflow: hidden;
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-base);
}

.modal-overlay.active .modal-container {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    cursor: pointer;
    z-index: 10;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-accent-primary);
    border-color: var(--color-accent-primary);
    color: white;
    transform: rotate(90deg);
}

.modal-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    height: 100%;
    max-height: 85vh;
}

.modal-images {
    background: var(--color-bg-tertiary);
    padding: var(--space-lg);
    overflow: hidden;
}

.modal-images-scroll {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    height: 100%;
    max-height: calc(85vh - 2 * var(--space-lg));
    overflow-y: auto;
    padding-right: var(--space-sm);
}

.modal-images-scroll::-webkit-scrollbar {
    width: 6px;
}

.modal-images-scroll::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-full);
}

.modal-images-scroll::-webkit-scrollbar-thumb {
    background: var(--color-accent-primary);
    border-radius: var(--radius-full);
}

.modal-image-item {
    flex-shrink: 0;
    aspect-ratio: 16/10;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
}

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

.modal-details {
    padding: var(--space-2xl);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.modal-category {
    display: inline-block;
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-accent-primary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: var(--space-sm);
}

.modal-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
    line-height: 1.3;
}

.modal-description {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-xl);
}

.modal-tech-section {
    margin-bottom: var(--space-xl);
}

.modal-tech-section h3 {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.modal-tech-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.modal-tech-list li {
    font-size: var(--text-sm);
    font-family: var(--font-mono);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.modal-tech-list li:hover {
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
}

.modal-actions {
    display: flex;
    gap: var(--space-md);
    margin-top: auto;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
}

.modal-actions .btn {
    flex: 1;
}

.modal-actions .btn svg {
    flex-shrink: 0;
}

/* Modal Responsive */
@media (max-width: 768px) {
    .modal-overlay {
        padding: var(--space-md);
        align-items: flex-end;
    }
    
    .modal-container {
        max-height: 90vh;
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    }
    
    .modal-content {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr;
    }
    
    .modal-images {
        max-height: 200px;
    }
    
    .modal-images-scroll {
        flex-direction: row;
        overflow-x: auto;
        overflow-y: hidden;
        max-height: 100%;
        padding-right: 0;
        padding-bottom: var(--space-sm);
    }
    
    .modal-image-item {
        min-width: 250px;
        aspect-ratio: 16/10;
    }
    
    .modal-details {
        padding: var(--space-xl);
    }
    
    .modal-actions {
        flex-direction: column;
    }
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: var(--color-bg-secondary);
    padding: var(--space-3xl) 0 var(--space-xl);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-2xl);
    border-bottom: 1px solid var(--color-border);
}

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

.footer-tagline {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    margin-top: var(--space-sm);
}

.footer-nav {
    display: flex;
    gap: var(--space-xl);
}

.footer-nav a {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.back-to-top {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.back-to-top:hover {
    background: var(--color-accent-primary);
    color: var(--color-bg-primary);
    transform: translateY(-2px);
}

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* Scroll Reveal Animation */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   RESPONSIVE STYLES
   ======================================== */

/* Tablet */
@media (max-width: 1024px) {
    :root {
        --text-5xl: 3rem;
        --text-6xl: 3.5rem;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-3xl);
    }
    
    .hero-tagline {
        justify-content: center;
    }
    
    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .about-image {
        position: static;
        max-width: 300px;
        margin: 0 auto;
    }
    
    .about-content {
        text-align: center;
    }
    
    .about-actions {
        justify-content: center;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --space-4xl: 4rem;
        --container-padding: 1rem;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .theme-toggle {
        position: absolute;
        right: 60px;
        width: 40px;
        height: 40px;
    }
    
    .theme-icon {
        width: 18px;
        height: 18px;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(255, 255, 255, 0.98);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--space-2xl);
        opacity: 0;
        visibility: hidden;
        transition: opacity var(--transition-base), visibility var(--transition-base);
    }
    
    [data-theme="dark"] .nav-menu {
        background: rgba(10, 10, 15, 0.98);
    }
    
    .nav-menu.active {
        opacity: 1;
        visibility: visible;
    }
    
    .nav-link {
        font-size: var(--text-xl);
    }
    
    .hero {
        padding-top: 100px;
    }
    
    .hero-visual {
        display: none;
    }
    
    .about-highlights {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .skill-item {
        grid-template-columns: 40px 1fr;
    }
    
    .skill-name {
        grid-column: 2;
        grid-row: 1;
    }
    
    .skill-bar {
        grid-column: 2;
        grid-row: 2;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--space-xl);
        text-align: center;
    }
    
    .footer-nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--space-md);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-lg);
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    :root {
        --text-4xl: 2rem;
        --text-5xl: 2.5rem;
    }
    
    .hero-tagline {
        flex-direction: column;
    }
    
    .tagline-separator {
        display: none;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .about-actions {
        flex-direction: column;
    }
    
    .skills-container {
        grid-template-columns: 1fr;
    }
    
    .social-icons {
        justify-content: center;
    }
}