/* ==========================================================================
   DESIGN SYSTEM & VARIABLES
   ========================================================================== */
:root {
    /* Color Palette (HSL Tailored) */
    --bg-base: 29 27% 10%;
    --bg-surface: 22 55% 16%;
    --bg-surface-glass: 22 55% 16%;
    
    --text-primary: 30 15% 94%;
    --text-secondary: 30 12% 76%;
    --text-muted: 30 10% 50%;
    
    --accent-primary: 28 90% 43%;       /* Rust Orange (#d1660b) */
    --accent-primary-glow: 28 90% 43% / 0.15;
    --accent-secondary: 25 79% 37%;     /* Dark Orange (#a95214) */
    --accent-secondary-glow: 25 79% 37% / 0.15;
    
    --success: 142 70% 50%;
    --warning: 28 90% 55%;
    --error: 0 85% 60%;
    
    --border-color: 30 44% 25%;
    --border-glow: 28 90% 43% / 0.25;
    
    /* Spacing Scale (4px increments) */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-6: 24px;
    --space-8: 32px;
    --space-12: 48px;
    --space-16: 64px;
    
    /* Type Scale */
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 20px;
    --font-size-xl: 24px;
    --font-size-2xl: 32px;
    --font-size-3xl: 48px;
    --font-size-4xl: 64px;
    
    --border-radius: 12px;
    --border-radius-sm: 6px;
    --border-radius-lg: 24px;
    
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-snappy: all 0.15s cubic-bezier(0, 0, 0.2, 1);
}

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

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

body {
    background-color: hsl(var(--bg-base));
    color: hsl(var(--text-primary));
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

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

::-webkit-scrollbar-track {
    background: hsl(var(--bg-base));
}

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

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

/* Dot Grid Background Overlay */
.dot-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-image: radial-gradient(hsl(var(--border-color)) 1px, transparent 1px);
    background-size: 24px 24px;
    pointer-events: none;
    z-index: -10;
    opacity: 0.6;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin-right: auto;
    margin-left: auto;
    padding-right: var(--space-6);
    padding-left: var(--space-6);
}

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */
h1, h2, h3, h4 {
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

h2.section-title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-8);
    position: relative;
    display: inline-block;
}

h2.section-title::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, hsl(var(--accent-primary)), hsl(var(--accent-secondary)));
    border-radius: 2px;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-snappy);
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-primary {
    background: linear-gradient(135deg, hsl(var(--accent-primary)), hsl(var(--accent-primary) / 0.85));
    color: hsl(var(--text-primary));
    box-shadow: 0 4px 20px var(--accent-primary-glow);
    border: 1px solid hsl(var(--accent-primary) / 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px hsl(var(--accent-primary) / 0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

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

.btn-secondary:hover {
    background-color: hsl(var(--border-color));
    border-color: hsl(var(--text-secondary) / 0.3);
    transform: translateY(-2px);
}

/* ==========================================================================
   GLASSMORPHISM CARD STYLES
   ========================================================================== */
.glass {
    background: hsl(var(--bg-surface-glass) / 0.65);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid hsl(var(--border-color));
    border-radius: var(--border-radius);
    transition: var(--transition-smooth);
}

.glass:hover {
    border-color: hsl(var(--border-color) / 1.5);
}

/* ==========================================================================
   HEADER / NAV
   ========================================================================== */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: hsl(var(--bg-base) / 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid hsl(var(--border-color) / 0.5);
    padding: var(--space-4) 0;
}

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

.logo {
    font-size: var(--font-size-lg);
    font-weight: 800;
    letter-spacing: 0.05em;
}

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

.nav-list {
    display: flex;
    list-style: none;
    align-items: center;
    gap: var(--space-6);
}

.nav-link {
    font-size: var(--font-size-sm);
    color: hsl(var(--text-secondary));
    font-weight: 500;
}

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

.contact-btn {
    padding: var(--space-2) var(--space-4);
    border-radius: var(--border-radius-sm);
    border: 1px solid hsl(var(--border-color));
    background-color: hsl(var(--bg-surface));
}

.contact-btn:hover {
    border-color: hsl(var(--accent-primary));
    box-shadow: 0 0 10px var(--accent-primary-glow);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
    padding: var(--space-16) 0 var(--space-12) 0;
    text-align: center;
    position: relative;
}

.hero-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-6);
}

.hero-avatar {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    padding: 4px;
    background: linear-gradient(135deg, hsl(var(--accent-primary)), hsl(var(--accent-secondary)));
    box-shadow: 0 0 40px hsl(var(--accent-primary-glow)), 0 8px 24px hsl(var(--bg-base) / 0.6);
    transition: var(--transition-smooth);
}

.hero-avatar:hover {
    transform: translateY(-4px);
    box-shadow: 0 0 60px hsl(var(--accent-primary) / 0.35), 0 12px 32px hsl(var(--bg-base) / 0.7);
}

.hero-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    object-position: center top;
    display: block;
    border: 3px solid hsl(var(--bg-base));
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-xs);
    background-color: hsl(var(--success) / 0.1);
    color: hsl(var(--success));
    padding: var(--space-1) var(--space-3);
    border-radius: 9999px;
    border: 1px solid hsl(var(--success) / 0.2);
    font-weight: 600;
}

.pulse-dot {
    width: 6px;
    height: 6px;
    background-color: hsl(var(--success));
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 hsl(var(--success) / 0.7);
    }
    70% {
        box-shadow: 0 0 0 6px hsl(var(--success) / 0);
    }
    100% {
        box-shadow: 0 0 0 0 hsl(var(--success) / 0);
    }
}

.hero-title {
    font-size: var(--font-size-3xl);
    max-width: 800px;
    line-height: 1.15;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: hsl(var(--text-secondary));
    max-width: 650px;
    font-weight: 300;
}

.hero-cta {
    display: flex;
    gap: var(--space-4);
    margin-top: var(--space-3);
}

/* ==========================================================================
   ABOUT SECTION
   ========================================================================== */
.about-section {
    padding: var(--space-12) 0;
}

.about-card {
    padding: var(--space-8);
}

.about-text {
    font-size: var(--font-size-base);
    color: hsl(var(--text-secondary));
    margin-bottom: var(--space-4);
}

.about-text:last-child {
    margin-bottom: 0;
}

.about-text strong {
    color: hsl(var(--text-primary));
}

/* ==========================================================================
   SKILLS SECTION
   ========================================================================== */
.skills-section {
    padding: var(--space-12) 0;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-6);
}

.skills-card {
    padding: var(--space-8);
    position: relative;
    overflow: hidden;
}

.card-icon {
    font-size: 32px;
    margin-bottom: var(--space-4);
}

.skills-card h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-4);
    color: hsl(var(--text-primary));
}

.skills-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.skills-list li {
    font-size: var(--font-size-sm);
    color: hsl(var(--text-secondary));
    position: relative;
    padding-left: var(--space-4);
}

.skills-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: hsl(var(--accent-primary));
}

/* Glow reflection effect */
.hover-glow {
    position: relative;
}

.hover-glow::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: inherit;
    background: radial-gradient(
        800px circle at var(--mouse-x, 0) var(--mouse-y, 0),
        hsl(var(--accent-primary) / 0.08),
        transparent 40%
    );
    z-index: 1;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.hover-glow:hover::before {
    opacity: 1;
}

/* ==========================================================================
   PROJECTS SECTION
   ========================================================================== */
.projects-section {
    padding: var(--space-12) 0;
}

.section-header-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-bottom: var(--space-8);
}

.section-header-flex .section-title {
    margin-bottom: 0;
}

.filter-container {
    display: flex;
    background-color: hsl(var(--bg-surface));
    border: 1px solid hsl(var(--border-color));
    border-radius: var(--border-radius-sm);
    padding: var(--space-1);
    gap: var(--space-1);
}

.filter-btn {
    background: none;
    border: none;
    color: hsl(var(--text-secondary));
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-snappy);
}

.filter-btn:hover {
    color: hsl(var(--text-primary));
}

.filter-btn.active {
    background-color: hsl(var(--border-color));
    color: hsl(var(--text-primary));
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-6);
}

.project-card {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    height: 100%;
}

.project-card:hover {
    border-color: hsl(var(--accent-primary) / 0.5);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px var(--accent-primary-glow);
}

.project-banner {
    height: 120px;
    width: 100%;
    opacity: 0.85;
}

.web-gradient { background: linear-gradient(135deg, #4f46e5, #06b6d4); }
.db-gradient { background: linear-gradient(135deg, #10b981, #3b82f6); }
.pos-gradient { background: linear-gradient(135deg, #7c3aed, #ec4899); }
.mobile-gradient { background: linear-gradient(135deg, #f59e0b, #e11d48); }
.trip-gradient { background: linear-gradient(135deg, #0284c7, #10b981); }
.vision-gradient { background: linear-gradient(135deg, #e11d48, #4f46e5); }

.project-content {
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-tag {
    font-size: var(--font-size-xs);
    font-family: 'Fira Code', monospace;
    color: hsl(var(--accent-secondary));
    margin-bottom: var(--space-2);
}

.project-content h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-3);
}

.project-content p {
    font-size: var(--font-size-sm);
    color: hsl(var(--text-secondary));
    margin-bottom: var(--space-6);
    flex-grow: 1;
}

.project-links {
    margin-top: auto;
}

.project-link {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: hsl(var(--text-primary));
}

.project-link:hover {
    color: hsl(var(--accent-primary));
}

.project-link-disabled {
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: hsl(var(--text-muted));
    font-family: 'Fira Code', monospace;
    letter-spacing: -0.01em;
}

/* Card filter animations classes */
.project-card.fade-out {
    opacity: 0;
    transform: scale(0.9);
    pointer-events: none;
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
    margin: 0;
    border: none;
    padding: 0;
}

/* ==========================================================================
   TERMINAL SECTION
   ========================================================================== */
.terminal-section {
    padding: var(--space-12) 0;
}

.section-subtitle {
    font-size: var(--font-size-base);
    color: hsl(var(--text-secondary));
    margin-bottom: var(--space-8);
}

.terminal-code-tag {
    font-family: 'Fira Code', monospace;
    background-color: hsl(var(--border-color));
    padding: var(--space-1) var(--space-2);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    color: hsl(var(--accent-secondary));
}

.terminal-window {
    border-radius: var(--border-radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 380px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5);
}

.terminal-header {
    background-color: hsl(var(--bg-surface));
    padding: var(--space-3) var(--space-4);
    display: flex;
    align-items: center;
    border-bottom: 1px solid hsl(var(--border-color));
}

.terminal-dots {
    display: flex;
    gap: var(--space-2);
}

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

.dot.red { background-color: hsl(var(--error)); }
.dot.yellow { background-color: hsl(var(--warning)); }
.dot.green { background-color: hsl(var(--success)); }

.terminal-title {
    flex-grow: 1;
    text-align: center;
    font-family: 'Fira Code', monospace;
    font-size: var(--font-size-xs);
    color: hsl(var(--text-muted));
    margin-right: 50px; /* offset to center against dots */
}

.terminal-body {
    flex-grow: 1;
    padding: var(--space-4);
    overflow-y: auto;
    font-family: 'Fira Code', monospace;
    font-size: var(--font-size-sm);
    color: hsl(var(--text-secondary));
    background-color: hsl(var(--bg-base) / 0.85);
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.terminal-line {
    word-break: break-all;
    white-space: pre-wrap;
}

.highlight-green {
    color: hsl(var(--success));
    font-weight: 600;
}

.highlight-cyan {
    color: hsl(var(--accent-secondary));
}

.terminal-input-line {
    display: flex;
    align-items: center;
    padding: var(--space-3) var(--space-4);
    background-color: hsl(var(--bg-base) / 0.95);
    border-top: 1px solid hsl(var(--border-color) / 0.5);
    font-family: 'Fira Code', monospace;
    font-size: var(--font-size-sm);
}

.terminal-prompt {
    color: hsl(var(--accent-primary));
    margin-right: var(--space-2);
    font-weight: 600;
}

#terminal-input {
    flex-grow: 1;
    background: none;
    border: none;
    outline: none;
    color: hsl(var(--text-primary));
    font-family: inherit;
    font-size: inherit;
}

/* ==========================================================================
   EXPERIENCE TIMELINE
   ========================================================================== */
.timeline-section {
    padding: var(--space-12) 0;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-8) 0;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 2px;
    background-color: hsl(var(--border-color));
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -1px;
}

.timeline-item {
    padding: var(--space-2) var(--space-8);
    position: relative;
    width: 50%;
}

.timeline-item::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    right: -8px;
    background-color: hsl(var(--bg-base));
    border: 3px solid hsl(var(--accent-primary));
    top: 24px;
    border-radius: 50%;
    z-index: 1;
}

.timeline-item.left {
    left: 0;
}

.timeline-item.right {
    left: 50%;
}

.timeline-item.right::after {
    left: -8px;
}

.timeline-content {
    padding: var(--space-6);
}

.timeline-period {
    display: inline-block;
    font-family: 'Fira Code', monospace;
    font-size: var(--font-size-xs);
    color: hsl(var(--accent-secondary));
    margin-bottom: var(--space-2);
}

.timeline-content h3 {
    font-size: var(--font-size-base);
    color: hsl(var(--text-primary));
    margin-bottom: var(--space-1);
}

.timeline-company {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: hsl(var(--accent-primary));
    margin-bottom: var(--space-3);
}

.timeline-content p {
    font-size: var(--font-size-sm);
    color: hsl(var(--text-secondary));
}

/* ==========================================================================
   EDUCATION & LANGUAGES
   ========================================================================== */
.education-section {
    padding: var(--space-12) 0;
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-6);
    margin-bottom: var(--space-12);
}

.edu-card {
    padding: var(--space-8);
}

.edu-period {
    display: inline-block;
    font-family: 'Fira Code', monospace;
    font-size: var(--font-size-xs);
    color: hsl(var(--accent-secondary));
    margin-bottom: var(--space-2);
}

.edu-card h3 {
    font-size: var(--font-size-lg);
    color: hsl(var(--text-primary));
    margin-bottom: var(--space-1);
}

.edu-org {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: hsl(var(--accent-primary));
    margin-bottom: var(--space-3);
}

.edu-card p {
    font-size: var(--font-size-sm);
    color: hsl(var(--text-secondary));
}

.languages-title {
    font-size: var(--font-size-xl);
    text-align: center;
    margin-bottom: var(--space-6);
    color: hsl(var(--text-primary));
}

.languages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-4);
}

.lang-card {
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.lang-name {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: hsl(var(--text-primary));
}

.lang-level {
    font-size: var(--font-size-sm);
    color: hsl(var(--text-secondary));
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */
.contact-section {
    padding: var(--space-16) 0;
}

.contact-container {
    text-align: center;
}

.contact-text {
    max-width: 600px;
    margin: 0 auto var(--space-8) auto;
    color: hsl(var(--text-secondary));
}

.contact-methods {
    display: flex;
    justify-content: center;
    gap: var(--space-6);
    flex-wrap: wrap;
}

.contact-card {
    padding: var(--space-6) var(--space-8);
    min-width: 280px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
}

.contact-card:hover {
    border-color: hsl(var(--accent-primary));
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--accent-primary-glow);
}

.contact-icon {
    font-size: 32px;
}

.contact-card h4 {
    font-size: var(--font-size-base);
}

.contact-detail {
    font-size: var(--font-size-sm);
    color: hsl(var(--text-secondary));
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
    padding: var(--space-8) 0;
    border-top: 1px solid hsl(var(--border-color));
    font-size: var(--font-size-xs);
    color: hsl(var(--text-muted));
    text-align: center;
}

/* ==========================================================================
   RESPONSIVE DESIGN Breakpoints
   ========================================================================== */

/* Tablet Breakpoint */
@media screen and (max-width: 768px) {
    /* Type adjustments */
    --font-size-3xl: 36px;
    --font-size-2xl: 28px;
    
    .nav-list {
        gap: var(--space-4);
    }
    
    .section-header-flex {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .timeline::after {
        left: 31px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 50px;
        padding-right: var(--space-4);
    }
    
    .timeline-item.right {
        left: 0%;
    }
    
    .timeline-item::after {
        left: 23px !important;
    }
}

/* Mobile Breakpoint */
@media screen and (max-width: 480px) {
    /* Type adjustments */
    --font-size-3xl: 28px;
    --font-size-2xl: 22px;
    --font-size-lg: 16px;

    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .hero-avatar {
        width: 140px;
        height: 140px;
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-card {
        width: 100%;
    }
}

/* ==========================================================================
   ✦ POLISH LAYER — animations, motion & engineering flourishes
   ========================================================================== */

/* Scroll progress bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0%;
    z-index: 200;
    background: linear-gradient(90deg, hsl(var(--accent-primary)), hsl(var(--accent-secondary)));
    box-shadow: 0 0 12px hsl(var(--accent-primary) / 0.6);
    transition: width 0.1s linear;
}

/* Ambient aurora glow + drifting grid */
.aurora {
    position: fixed;
    inset: -25%;
    z-index: -9;
    pointer-events: none;
    background:
        radial-gradient(38% 38% at 18% 22%, hsl(var(--accent-primary) / 0.14), transparent 62%),
        radial-gradient(42% 42% at 82% 28%, hsl(var(--accent-secondary) / 0.12), transparent 62%),
        radial-gradient(36% 36% at 60% 85%, hsl(var(--accent-primary) / 0.10), transparent 62%);
    filter: blur(48px);
    animation: auroraMove 20s ease-in-out infinite alternate;
}

@keyframes auroraMove {
    0%   { transform: translate(0, 0) scale(1); }
    100% { transform: translate(4%, 6%) scale(1.12); }
}

.dot-grid {
    animation: gridDrift 42s linear infinite;
}

@keyframes gridDrift {
    from { background-position: 0 0; }
    to   { background-position: 24px 24px; }
}

/* Animated gradient text shimmer */
.gradient-text {
    background-size: 220% auto;
    animation: gradientShift 7s ease infinite;
}

@keyframes gradientShift {
    0%   { background-position: 0% 50%; }
    50%  { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Section index label:  // 01. */
.section-title[data-index]::before {
    content: "// " attr(data-index) ".";
    display: block;
    font-family: 'Fira Code', monospace;
    font-size: var(--font-size-xs);
    font-weight: 500;
    letter-spacing: 0;
    color: hsl(var(--accent-secondary));
    margin-bottom: var(--space-2);
}

/* Animated nav underline + active state */
.nav-link:not(.contact-btn) {
    position: relative;
}

.nav-link:not(.contact-btn)::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -5px;
    width: 0;
    height: 2px;
    border-radius: 2px;
    background: linear-gradient(90deg, hsl(var(--accent-primary)), hsl(var(--accent-secondary)));
    transition: width 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:not(.contact-btn):hover::after,
.nav-link.active:not(.contact-btn)::after {
    width: 100%;
}

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

/* Button shine sweep */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: -80%;
    width: 45%;
    background: linear-gradient(120deg, transparent, hsl(0 0% 100% / 0.22), transparent);
    transform: skewX(-20deg);
    transition: left 0.6s ease;
    pointer-events: none;
}

.btn:hover::after { left: 140%; }

/* Hamburger toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 10px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 110;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    border-radius: 2px;
    background: hsl(var(--text-primary));
    transition: transform 0.3s ease, opacity 0.2s ease;
}

.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-overlay {
    position: fixed;
    inset: 0;
    background: hsl(var(--bg-base) / 0.6);
    backdrop-filter: blur(2px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 99;
}

.nav-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

/* Hero canvas + layering */
.hero-section {
    overflow: hidden;
}

.hero-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.85;
    /* Fade particles out of the central text column — keep them at the edges */
    -webkit-mask-image: radial-gradient(ellipse 62% 58% at 50% 48%, transparent 40%, rgba(0, 0, 0, 0.45) 66%, #000 88%);
    mask-image: radial-gradient(ellipse 62% 58% at 50% 48%, transparent 40%, rgba(0, 0, 0, 0.45) 66%, #000 88%);
}

.hero-container {
    position: relative;
    z-index: 1;
}

/* Typed role line */
.hero-role {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-family: 'Fira Code', monospace;
    font-size: var(--font-size-lg);
    min-height: 1.7em;
    color: hsl(var(--text-secondary));
}

.hero-role-prompt { color: hsl(var(--accent-secondary)); font-weight: 700; }
.hero-role-text { color: hsl(var(--text-primary)); font-weight: 600; }

.type-caret {
    display: inline-block;
    width: 9px;
    height: 1.15em;
    background: hsl(var(--accent-primary));
    border-radius: 1px;
    transform: translateY(2px);
    animation: caretBlink 1s step-end infinite;
}

@keyframes caretBlink { 50% { opacity: 0; } }

/* Hero stat counters */
.hero-stats {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-8);
    margin-top: var(--space-4);
    padding-top: var(--space-6);
    border-top: 1px solid hsl(var(--border-color) / 0.6);
    width: 100%;
    max-width: 640px;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 84px;
}

.stat-num {
    font-family: 'Fira Code', monospace;
    font-size: var(--font-size-2xl);
    font-weight: 800;
    line-height: 1;
    background: linear-gradient(135deg, hsl(var(--accent-primary)), hsl(var(--accent-secondary)));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    margin-top: var(--space-2);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: hsl(var(--text-muted));
}

.scroll-cue {
    position: relative;
    margin-top: var(--space-8);
    width: 26px;
    height: 42px;
    border: 2px solid hsl(var(--text-muted));
    border-radius: 14px;
    z-index: 1;
    transition: var(--transition-smooth);
}

.scroll-cue:hover { border-color: hsl(var(--accent-primary)); }

.scroll-cue span {
    display: block;
    width: 4px;
    height: 8px;
    margin: 7px auto 0;
    border-radius: 2px;
    background: hsl(var(--accent-primary));
    animation: scrollWheel 1.7s ease infinite;
}

@keyframes scrollWheel {
    0%   { opacity: 0; transform: translateY(0); }
    35%  { opacity: 1; }
    75%  { opacity: 0; transform: translateY(14px); }
    100% { opacity: 0; }
}

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s cubic-bezier(0.16, 0.84, 0.44, 1),
                transform 0.7s cubic-bezier(0.16, 0.84, 0.44, 1);
    will-change: opacity, transform;
}

.reveal.in-view {
    opacity: 1;
    transform: none;
}

/* 3D tilt cards */
.skills-card,
.project-card {
    transform-style: preserve-3d;
    will-change: transform;
}

/* Back to top */
.back-to-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 46px;
    height: 46px;
    display: grid;
    place-items: center;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    color: #fff;
    background: linear-gradient(135deg, hsl(var(--accent-primary)), hsl(var(--accent-secondary)));
    box-shadow: 0 6px 22px hsl(var(--accent-primary) / 0.4);
    opacity: 0;
    transform: translateY(18px) scale(0.9);
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
    z-index: 90;
}

.back-to-top.show {
    opacity: 1;
    transform: none;
    pointer-events: auto;
}

.back-to-top:hover { transform: translateY(-3px); }

/* Reveal stagger via inline --d (set by JS) */
.reveal[style*="--d"] { transition-delay: var(--d); }

/* ==========================================================================
   ✦ RESPONSIVE — mobile menu + polish tuning
   ========================================================================== */
@media screen and (max-width: 860px) {
    .nav-toggle { display: flex; }

    .nav-list {
        position: fixed;
        top: 0;
        right: 0;
        height: 100vh;
        width: min(80vw, 320px);
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-start;
        gap: var(--space-6);
        padding: calc(var(--space-16) + var(--space-4)) var(--space-8);
        background: hsl(var(--bg-surface) / 0.96);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-left: 1px solid hsl(var(--border-color));
        transform: translateX(105%);
        transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 105;
    }

    .nav-list.open { transform: translateX(0); }

    .nav-list .nav-link { font-size: var(--font-size-lg); }
    .contact-btn { display: inline-block; }
    .scroll-cue { display: none; }
}

@media screen and (max-width: 768px) {
    .hero-stats { gap: var(--space-6); }
    .stat { min-width: 68px; }
    .hero-role { font-size: var(--font-size-base); }
    .back-to-top { bottom: 16px; right: 16px; }
}

@media screen and (max-width: 480px) {
    .hero-stats {
        gap: var(--space-4) var(--space-6);
    }
    .stat-num { font-size: var(--font-size-xl); }
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .reveal { opacity: 1 !important; transform: none !important; }
    .aurora, .dot-grid, .gradient-text { animation: none !important; }
}