@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=Work+Sans:wght@300;400;500;600;700&display=swap');

/* ============================================
   DESIGN SYSTEM — Treble.ai inspired
   ============================================ */

:root {
    --primary: #FF4800;
    --primary-hover: #E5430A;
    --primary-glow: rgba(255, 72, 0, 0.15);
    --dark: #1C2B33;
    --dark-secondary: #2A3541;
    --dark-surface: #111827;
    --light: #FFFFFF;
    --light-secondary: #F5F5F5;
    --light-surface: #F0F0F0;
    --text-on-dark: #FFFFFF;
    --text-on-light: #1C2B33;
    --border-light: #E5E5E5;
    --border-dark: #2A3541;
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Work Sans', sans-serif;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.16);
    --shadow-glow: 0 0 40px rgba(255, 72, 0, 0.3);
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
    --bg: var(--light);
    --text: var(--text-on-light);
    --surface: var(--light-surface);
    --border: var(--border-light);
}

[data-theme="dark"] {
    --bg: var(--dark);
    --text: var(--text-on-dark);
    --surface: var(--dark-surface);
    --border: var(--border-dark);
}

/* ============================================
   BASE STYLES
   ============================================ */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    overflow-x: hidden;
    width: 100%;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
    position: relative;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.1;
}

h1 { font-size: clamp(2.5rem, 8vw, 5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 3rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.5rem); }

p { margin-bottom: 1rem; }

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

strong { font-weight: 600; }
.accent { color: var(--primary); }
img { max-width: 100%; height: auto; display: block; }

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--dark);
    color: var(--text-on-dark);
    box-shadow: var(--shadow-md);
}

[data-theme="dark"] .btn-primary {
    background-color: var(--primary);
    color: var(--light);
}

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

[data-theme="dark"] .btn-primary:hover {
    background-color: var(--primary-hover);
}

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

[data-theme="dark"] .btn-secondary {
    color: var(--light);
    border-color: var(--border-dark);
}

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

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

.btn-outline:hover {
    background-color: var(--primary);
    color: var(--light);
}

.btn-cta {
    background-color: var(--dark);
    color: var(--text-on-dark);
    padding: 10px 24px;
    border-radius: var(--radius-full);
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-fast);
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

[data-theme="dark"] .btn-cta {
    background-color: var(--primary);
    color: var(--light);
}

.btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md), var(--shadow-glow);
    background-color: var(--primary);
    color: var(--light);
}

/* ============================================
   HEADER
   ============================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    max-width: 100vw;
    z-index: 100;
    background-color: var(--bg);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 16px 32px;
}

.logo { text-decoration: none; flex-shrink: 0; }

.logo-text {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 700;
    color: var(--text);
    transition: color var(--transition-normal);
}

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

.nav { display: flex; align-items: center; gap: 32px; }

.nav-links {
    display: flex;
    list-style: none;
    gap: 28px;
    align-items: center;
}

.nav-link {
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    text-decoration: none;
    transition: color var(--transition-fast);
    position: relative;
    display: flex;
    align-items: center;
    gap: 4px;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: width var(--transition-fast);
}

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

/* Caret */
.caret {
    transition: transform var(--transition-fast);
    opacity: 0.6;
    display: inline-block;
    width: 10px;
    height: 10px;
}

.nav-dropdown:hover .caret {
    transform: rotate(180deg);
    opacity: 1;
}

/* Dropdown */
.nav-dropdown { position: relative; }

.dropdown-menu {
    position: absolute;
    top: calc(100% + 12px);
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    min-width: 200px;
    background-color: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 8px 0;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
    z-index: 110;
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-link {
    display: block;
    padding: 10px 20px;
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    text-decoration: none;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.dropdown-link:hover {
    background-color: var(--surface);
    color: var(--primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 8px;
    z-index: 160;
}

.hamburger span {
    width: 22px;
    height: 2px;
    background-color: var(--text);
    transition: all var(--transition-fast);
    border-radius: 2px;
}

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

/* Theme Toggle */
.theme-switch-wrapper { position: relative; top: auto; right: auto; z-index: auto; }

.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.switch input { opacity: 0; width: 0; height: 0; }

.slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background-color: var(--border-light);
    border-radius: var(--radius-full);
    transition: background-color var(--transition-fast);
}

[data-theme="dark"] .slider { background-color: var(--border-dark); }

.slider::before {
    content: '';
    position: absolute;
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: var(--light);
    border-radius: 50%;
    transition: transform var(--transition-fast), background-color var(--transition-fast);
}

input:checked + .slider::before {
    transform: translateX(20px);
    background-color: var(--primary);
}

.toggle-icon {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    font-size: 12px;
    line-height: 1;
}

.icon-sun { left: 5px; color: var(--dark); opacity: 1; }
.icon-moon { right: 5px; color: var(--light); opacity: 0; }

[data-theme="dark"] .icon-sun { opacity: 0; }
[data-theme="dark"] .icon-moon { opacity: 1; }
input:checked ~ .icon-sun { opacity: 0; }
input:checked ~ .icon-moon { opacity: 1; }

/* ============================================
   SECTIONS
   ============================================ */

.section { padding: 80px 0; width: 100%; }

.section-inner {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 0 32px;
}

.section-alt { background-color: var(--surface); }

.section-label {
    font-family: var(--font-heading);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--primary);
    margin-bottom: 1rem;
}

.section-title { margin-bottom: 1.5rem; }

.section-desc {
    max-width: 600px;
    margin-bottom: 2rem;
    font-size: 18px;
    opacity: 0.8;
    line-height: 1.7;
}

/* ============================================
   HERO
   ============================================ */

.hero {
    position: relative;
    padding: 120px 0 80px;
    display: flex;
    align-items: center;
    min-height: 100vh;
    width: 100%;
    overflow: hidden;
}

.hero-inner {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 0 32px;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border-radius: var(--radius-full);
    background-color: var(--primary);
    color: var(--light);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    line-height: 1.05;
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.4rem);
    max-width: 600px;
    margin-bottom: 2rem;
    opacity: 0.7;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.stat { display: flex; flex-direction: column; min-width: 80px; }

.stat-number {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 2px;
    opacity: 0.6;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background-color: var(--border);
    flex-shrink: 0;
}

.hero-glow {
    position: absolute;
    top: 50%;
    right: 0;
    width: 600px;
    max-width: 80vw;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 72, 0, 0.12) 0%, transparent 60%);
    pointer-events: none;
    transform: translate(30%, -50%);
    z-index: 1;
}

[data-theme="dark"] .hero-glow {
    background: radial-gradient(circle, rgba(255, 72, 0, 0.08) 0%, transparent 60%);
}

/* ============================================
   ABOUT
   ============================================ */

.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    width: 100%;
}

.about-card {
    padding: 32px;
    border-radius: var(--radius-lg);
    background-color: var(--surface);
    border: 1px solid var(--border);
    transition: all var(--transition-normal);
}

.about-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.about-icon { color: var(--primary); margin-bottom: 16px; }
.about-card h3 { margin-bottom: 8px; }
.about-card p { opacity: 0.7; font-size: 14px; }

/* ============================================
   SKILLS
   ============================================ */

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    width: 100%;
}

.skill-group {
    padding: 32px;
    border-radius: var(--radius-lg);
    background-color: var(--surface);
    border: 1px solid var(--border);
}

[data-theme="dark"] .skill-group { background-color: var(--dark-surface); }

.skill-group-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--primary);
}

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

.skill-tag {
    display: inline-flex;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 500;
    background-color: var(--bg);
    border: 1px solid var(--border);
    transition: all var(--transition-fast);
    cursor: default;
}

.skill-tag:hover {
    background-color: var(--primary);
    color: var(--light);
    border-color: var(--primary);
}

[data-theme="dark"] .skill-tag {
    background-color: var(--dark);
    border-color: var(--border-dark);
    color: var(--text-on-dark);
}

/* ============================================
   PROJECTS
   ============================================ */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    width: 100%;
}

.project-card {
    display: flex;
    align-items: flex-start;
    padding: 32px;
    border-radius: var(--radius-lg);
    background-color: var(--surface);
    border: 1px solid var(--border);
    text-decoration: none;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    color: var(--text);
}

.project-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.project-card:hover .project-arrow svg {
    color: var(--primary);
    transform: translate(2px, -2px);
}

.project-icon { color: var(--primary); margin-right: 16px; flex-shrink: 0; }
.project-info { flex: 1; }
.project-info h3 { margin-bottom: 4px; color: var(--text); }
.project-info p { opacity: 0.7; font-size: 14px; }

.project-arrow {
    color: var(--text);
    opacity: 0.4;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.projects-cta { margin-top: 48px; text-align: center; width: 100%; }

/* ============================================
   CONTACT
   ============================================ */

.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    width: 100%;
}

.contact-card {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 24px;
    border-radius: var(--radius-lg);
    background-color: var(--surface);
    border: 1px solid var(--border);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    color: var(--text);
    transition: all var(--transition-normal);
}

.contact-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.contact-card svg { color: var(--primary); }

/* ============================================
   FOOTER
   ============================================ */

.footer {
    padding: 32px 0;
    border-top: 1px solid var(--border);
    width: 100%;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 0 32px;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-left .logo-text { font-size: 16px; }
.footer-right p { font-size: 13px; opacity: 0.6; }

/* ============================================
   BACK TO TOP BUTTON
   ============================================ */

.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--primary);
    color: var(--light);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity var(--transition-normal), visibility var(--transition-normal), transform var(--transition-normal), background-color var(--transition-fast);
    z-index: 90;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background-color: var(--primary-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

[data-theme="dark"] .back-to-top {
    background-color: var(--primary);
    box-shadow: 0 4px 16px rgba(255, 72, 0, 0.3);
}

[data-theme="dark"] .back-to-top:hover {
    background-color: var(--primary-hover);
}

/* ============================================
   REPO MODAL
   ============================================ */

.repo-modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: none;
    align-items: center;
    justify-content: center;
}

.repo-modal.open {
    display: flex;
}

.repo-modal-backdrop {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    cursor: pointer;
    animation: fadeIn 0.2s ease;
}

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

.repo-modal-content {
    position: relative;
    background-color: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 800px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s ease;
    overflow: hidden;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

.repo-modal-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding: 28px 32px 20px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.repo-modal-label {
    font-family: var(--font-heading);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--primary);
    display: block;
    margin-bottom: 6px;
}

.repo-modal-title {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 700;
    color: var(--text);
    margin: 0;
}

.repo-modal-close {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.repo-modal-close:hover {
    background-color: var(--surface);
    border-color: var(--primary);
    color: var(--primary);
}

.repo-modal-body {
    flex: 1;
    overflow-y: auto;
    padding: 24px 32px;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.repo-modal-body::-webkit-scrollbar {
    width: 6px;
}

.repo-modal-body::-webkit-scrollbar-track {
    background: transparent;
}

.repo-modal-body::-webkit-scrollbar-thumb {
    background-color: var(--border);
    border-radius: 3px;
}

.repo-modal-footer {
    padding: 16px 32px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    flex-shrink: 0;
}

.repo-modal-seeall {
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.repo-modal-seeall:hover {
    color: var(--primary-hover);
}

/* Repo Grid */
.repo-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.repo-item {
    display: flex;
    flex-direction: column;
    padding: 20px;
    border-radius: var(--radius-md);
    background-color: var(--surface);
    border: 1px solid var(--border);
    text-decoration: none;
    color: var(--text);
    transition: all var(--transition-fast);
}

.repo-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}

.repo-item-top {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.repo-item-icon {
    color: var(--primary);
    flex-shrink: 0;
}

.repo-item-name {
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin: 0;
}

.repo-item-desc {
    font-size: 13px;
    color: var(--text);
    opacity: 0.65;
    line-height: 1.5;
    margin-bottom: 12px;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.repo-item-desc em {
    opacity: 0.5;
}

.repo-item-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 12px;
    color: var(--text);
    opacity: 0.6;
}

.repo-lang {
    display: flex;
    align-items: center;
    gap: 4px;
}

.repo-lang-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.repo-meta-item {
    display: flex;
    align-items: center;
    gap: 3px;
}

.repo-updated {
    margin-left: auto;
}

/* Repo Loading / Error / Empty */
.repo-loading,
.repo-error,
.repo-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    text-align: center;
    gap: 12px;
}

.repo-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.repo-error-detail {
    font-size: 13px;
    opacity: 0.5;
}

.repo-error-btn {
    margin-top: 8px;
}

/* ============================================
   ANIMATIONS
   ============================================ */

.animate-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-in.visible {
    opacity: 1;
    transform: translateY(0);
}

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

@media (max-width: 1200px) {
    .hero-inner,
    .section-inner,
    .header-inner,
    .footer-inner {
        max-width: 100%;
        padding-left: 24px;
        padding-right: 24px;
    }
}

@media (max-width: 1024px) {
    .nav { display: none; }
    .hamburger { display: flex; }

    .nav.open {
        display: flex;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: var(--bg);
        z-index: 150;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 48px;
        padding: 24px;
        overflow-y: auto;
        width: 100%;
    }

    .nav.open .nav-links {
        flex-direction: column;
        gap: 24px;
        align-items: center;
    }

    .nav.open .nav-link { font-size: 20px; gap: 6px; }

    .nav.open .nav-dropdown {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .nav.open .dropdown-menu {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        box-shadow: none;
        border: none;
        background: transparent;
        text-align: center;
        padding: 8px 0;
        min-width: auto;
        display: flex;
        flex-direction: column;
        gap: 8px;
    }

    .about-grid { grid-template-columns: 1fr 1fr; }
    .projects-grid { grid-template-columns: 1fr 1fr; }
    .skills-grid { grid-template-columns: 1fr 1fr; }

    .hero-stats { flex-wrap: wrap; gap: 16px; }
    .hero-cta { flex-direction: row; }
    .hero { min-height: auto; padding: 100px 0 60px; }
    .hero-glow { width: 500px; height: 500px; transform: translate(40%, -50%); }

    .btn-cta { display: none; }
    .header-inner { padding: 14px 24px; }
}

@media (max-width: 768px) {
    html { font-size: 15px; }
    .section { padding: 56px 0; }
    .hero { padding: 80px 0 48px; min-height: auto; }

    .hero-title { font-size: clamp(2rem, 7vw, 3rem); }
    .hero-subtitle { font-size: clamp(0.9rem, 2.5vw, 1.1rem); }

    .header-inner { padding: 12px 20px; }
    .section-inner { padding: 0 20px; }

    .about-grid { grid-template-columns: 1fr; }
    .projects-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .skills-grid { grid-template-columns: 1fr; }

    .hero-cta {
        flex-direction: column;
        width: 100%;
        max-width: 320px;
        margin-left: auto;
        margin-right: auto;
    }

    .hero-cta .btn { width: 100%; justify-content: center; }

    .hero-badge {
        font-size: 10px;
        letter-spacing: 1.5px;
        padding: 6px 12px;
    }

    .about-card { padding: 24px; }
    .skill-group { padding: 24px; }
    .project-card { padding: 24px; flex-direction: column; }
    .project-icon { margin-right: 0; margin-bottom: 12px; }
    .project-arrow { position: absolute; top: 24px; right: 24px; }

    .footer-inner { flex-direction: column; gap: 12px; text-align: center; padding: 0 20px; }
    .section-desc { font-size: 16px; margin-bottom: 1.5rem; }

    .hero-glow { width: 300px; height: 300px; transform: translate(50%, -50%); }
}

@media (max-width: 480px) {
    html { font-size: 14px; }
    .section { padding: 40px 0; }
    .section-inner { padding: 0 16px; }
    .hero { padding: 72px 0 40px; }
    .hero-inner { padding: 0 16px; }

    .hero-title { font-size: clamp(1.75rem, 8vw, 2.5rem); letter-spacing: -0.5px; }
    .hero-subtitle { font-size: clamp(0.85rem, 2.5vw, 1rem); }

    .hero-badge { font-size: 9px; letter-spacing: 1px; padding: 5px 10px; }
    .hero-cta { max-width: 100%; }

    .hero-stats { gap: 12px; justify-content: center; }
    .stat-number { font-size: 22px; }
    .stat-label { font-size: 9px; letter-spacing: 1px; }

    .about-card { padding: 20px 16px; }
    .skill-group { padding: 20px 16px; }
    .project-card { padding: 20px 16px; }
    .contact-card { padding: 16px; font-size: 14px; gap: 8px; }

    .section-label { font-size: 11px; letter-spacing: 2px; }
    .header-inner { padding: 10px 16px; }
    .logo-text { font-size: 18px; }
    .skill-tag { padding: 5px 10px; font-size: 12px; }
    .btn { padding: 10px 20px; font-size: 13px; }
    .footer-inner { padding: 0 16px; }

    .hero-glow { width: 250px; height: 250px; transform: translate(50%, -50%); }
}

@media (max-width: 360px) {
    html { font-size: 13px; }
    .hero-title { font-size: 1.6rem; }
    .hero-subtitle { font-size: 0.85rem; }
    .hero-cta { gap: 12px; }
    .stat-number { font-size: 18px; }
    .hero-glow { width: 200px; height: 200px; }
}

@media (hover: none) and (pointer: coarse) {
    .nav-dropdown:hover .dropdown-menu {
        opacity: 0;
        visibility: hidden;
    }
    .nav-dropdown.active .dropdown-menu {
        opacity: 1;
        visibility: visible;
        transform: translateX(-50%) translateY(0);
    }
    .about-card:hover { transform: none; }
    .project-card:hover { transform: none; }
    .contact-card:hover { transform: none; }
    .skill-tag:hover { transform: none; }
    .btn:hover { transform: none; }
    .btn-cta:hover { transform: none; }
    .btn { min-height: 48px; }
    .nav-link { padding: 8px 0; }
}

@media (max-height: 500px) and (orientation: landscape) {
    .hero { min-height: auto; padding: 80px 0 40px; }
    .section { padding: 40px 0; }
    .hero-stats { gap: 12px; }
    .stat-divider { height: 24px; }
}

@supports (padding: max(0px)) {
    .header-inner { padding-left: max(32px, env(safe-area-inset-left)); padding-right: max(32px, env(safe-area-inset-right)); }
    .hero-inner, .section-inner, .footer-inner { padding-left: max(32px, env(safe-area-inset-left)); padding-right: max(32px, env(safe-area-inset-right)); }
    @media (max-width: 480px) {
        .header-inner { padding-left: max(16px, env(safe-area-inset-left)); padding-right: max(16px, env(safe-area-inset-right)); }
        .hero-inner, .section-inner, .footer-inner { padding-left: max(16px, env(safe-area-inset-left)); padding-right: max(16px, env(safe-area-inset-right)); }
    }
}

@media print {
    .header, .hero-glow, .hamburger, .theme-switch-wrapper, .btn-cta { display: none; }
    .hero { min-height: auto; padding: 20px 0; }
    .section { padding: 20px 0; }
    body { color: #000; background: #fff; }
}