/* ============================================
   DESIGN SYSTEM — KAVEESHA RUKSHAN PORTFOLIO
   Inspired by Trigger AJAX Portfolio Theme
   ============================================ */

/* === CSS CUSTOM PROPERTIES === */
:root {
    /* Dark theme (default) */
    --bg-primary:    #0a0a0a;
    --bg-secondary:  #111111;
    --bg-surface:    #161616;
    --bg-card:       #1a1a1a;
    --bg-elevated:   #222222;

    --text-primary:  #ffffff;
    --text-secondary:#9a9a9a;
    --text-muted:    #555555;

    --accent:        #00e5a0;
    --accent-alt:    #00c9db;
    --accent-glow:   rgba(0,229,160,0.15);

    --border:        rgba(255,255,255,0.06);
    --border-hover:  rgba(255,255,255,0.12);

    --radius-sm:     8px;
    --radius-md:     12px;
    --radius-lg:     20px;
    --radius-pill:   50px;

    --shadow:        0 8px 32px rgba(0,0,0,0.4);
    --shadow-lg:     0 20px 60px rgba(0,0,0,0.6);

    --transition:    0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-fast: 0.2s ease;

    --header-h:      80px;
    --container-max:  1280px;
}

/* Light theme */
[data-theme="light"] {
    --bg-primary:    #f5f5f5;
    --bg-secondary:  #ebebeb;
    --bg-surface:    #ffffff;
    --bg-card:       #ffffff;
    --bg-elevated:   #e8e8e8;

    --text-primary:  #1a1a1a;
    --text-secondary:#666666;
    --text-muted:    #aaaaaa;

    --accent:        #00c48c;
    --accent-alt:    #00a5b5;
    --accent-glow:   rgba(0,196,140,0.12);

    --border:        rgba(0,0,0,0.08);
    --border-hover:  rgba(0,0,0,0.15);

    --shadow:        0 8px 32px rgba(0,0,0,0.08);
    --shadow-lg:     0 20px 60px rgba(0,0,0,0.12);
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background var(--transition), color var(--transition);
}

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

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

ul { list-style: none; }

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 120px 0;
    position: relative;
}

/* === PRELOADER === */
#preloader {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

#preloader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.preloader-inner {
    text-align: center;
}

.preloader-circle {
    animation: preloaderDraw 1.8s ease-in-out infinite;
}

@keyframes preloaderDraw {
    0%   { stroke-dashoffset: 352; }
    50%  { stroke-dashoffset: 0;   }
    100% { stroke-dashoffset: -352; }
}

.preloader-text {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-top: 24px;
    animation: preloaderPulse 1.5s ease-in-out infinite;
}

@keyframes preloaderPulse {
    0%, 100% { opacity: 0.4; }
    50%      { opacity: 1;   }
}

/* === HEADER === */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--header-h);
    display: flex;
    align-items: center;
    transition: background var(--transition), box-shadow var(--transition);
}

.header.scrolled {
    background: rgba(10,10,10,0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 var(--border);
}

[data-theme="light"] .header.scrolled {
    background: rgba(245,245,245,0.85);
}

.header-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    z-index: 101;
}

.logo-svg {
    height: 40px;
    width: auto;
}

.logo-svg text {
    fill: var(--text-primary);
    transition: fill var(--transition);
}

.logo-svg path,
.logo-svg circle {
    transition: fill var(--transition);
}

/* Header controls */
.header-controls {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Status badge */
.status-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--accent-glow);
    border: 1px solid rgba(0,229,160,0.2);
    border-radius: var(--radius-pill);
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--accent);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    animation: statusPulse 2s ease-in-out infinite;
}

@keyframes statusPulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0,229,160,0.4); }
    50%      { opacity: 0.7; box-shadow: 0 0 0 6px rgba(0,229,160,0); }
}

/* Theme toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    border-radius: 50%;
    background: transparent;
    color: var(--text-primary);
    cursor: pointer;
    transition: border-color var(--transition-fast), background var(--transition-fast);
}

.theme-toggle:hover {
    border-color: var(--accent);
    background: var(--accent-glow);
}

[data-theme="dark"] .icon-moon  { display: none; }
[data-theme="dark"] .icon-sun   { display: block; }
[data-theme="light"] .icon-sun  { display: none; }
[data-theme="light"] .icon-moon { display: block; }

/* Hamburger */
.menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    border-radius: 50%;
    background: transparent;
    cursor: pointer;
    gap: 5px;
    z-index: 101;
    transition: border-color var(--transition-fast);
}

.menu-toggle:hover {
    border-color: var(--accent);
}

.hamburger-line {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: transform 0.35s ease, opacity 0.35s ease, width 0.35s ease;
}

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

/* === NAV OVERLAY === */
.nav-overlay {
    position: fixed;
    inset: 0;
    z-index: 99;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.nav-overlay.open {
    opacity: 1;
    visibility: visible;
}

.nav-content {
    text-align: center;
    width: 100%;
    max-width: 600px;
    padding: 0 24px;
}

.nav-links {
    margin-bottom: 60px;
}

.nav-links li {
    overflow: hidden;
}

.nav-link {
    display: inline-block;
    font-family: 'Outfit', sans-serif;
    font-size: clamp(36px, 6vw, 64px);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: -1px;
    padding: 8px 0;
    transform: translateY(100%);
    transition: transform 0.5s cubic-bezier(0.65, 0, 0.35, 1), color var(--transition-fast);
    transition-delay: calc(var(--i, 0) * 0.08s);
}

.nav-link::before {
    content: attr(data-index) '. ';
    font-family: 'JetBrains Mono', monospace;
    font-size: 14px;
    font-weight: 500;
    color: var(--accent);
    vertical-align: super;
    margin-right: 8px;
}

.nav-overlay.open .nav-link {
    transform: translateY(0);
}

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

.nav-footer {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease 0.4s, transform 0.5s ease 0.4s;
}

.nav-overlay.open .nav-footer {
    opacity: 1;
    transform: translateY(0);
}

.nav-socials {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 16px;
}

.nav-socials a {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.nav-copyright {
    font-size: 12px;
    color: var(--text-muted);
}

/* === HERO SECTION === */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: var(--header-h);
    overflow: hidden;
    position: relative;
}

.hero-bg-grain {
    position: absolute;
    inset: 0;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    pointer-events: none;
    z-index: 0;
}

.hero-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
    flex: 1;
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.hero-tag {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.pill {
    display: inline-flex;
    align-items: center;
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border);
    background: var(--bg-surface);
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-secondary);
    transition: border-color var(--transition-fast);
}

.pill.accent {
    border-color: rgba(0,229,160,0.3);
    color: var(--accent);
    background: var(--accent-glow);
}

.pill.small {
    font-size: 10px;
    padding: 4px 10px;
    letter-spacing: 0.5px;
}

.hero-title {
    font-family: 'Outfit', sans-serif;
    font-size: clamp(48px, 8vw, 100px);
    font-weight: 900;
    line-height: 0.95;
    letter-spacing: -3px;
    text-transform: uppercase;
}

.hero-line {
    display: block;
}

.hero-line.outline {
    -webkit-text-stroke: 2px var(--text-primary);
    color: transparent;
}

[data-theme="light"] .hero-line.outline {
    -webkit-text-stroke: 2px var(--text-primary);
}

.hero-subtitle {
    font-size: clamp(16px, 1.8vw, 20px);
    color: var(--text-secondary);
    max-width: 450px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 8px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.5px;
    border-radius: var(--radius-pill);
    cursor: pointer;
    border: none;
    transition: all var(--transition);
}

.btn-primary {
    background: var(--accent);
    color: #0a0a0a;
}

.btn-primary:hover {
    box-shadow: 0 0 0 4px var(--accent-glow), 0 8px 24px rgba(0,229,160,0.3);
    transform: translateY(-2px);
}

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

.btn-ghost:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-glow);
}

/* Hero image */
.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-wrapper {
    position: relative;
    width: 380px;
    height: 460px;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.hero-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-image-border {
    position: absolute;
    inset: -3px;
    border-radius: calc(var(--radius-lg) + 3px);
    border: 2px solid var(--accent);
    opacity: 0.3;
    pointer-events: none;
}

/* Hero floating tags */
.hero-float {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-primary);
    animation: floatBounce 3s ease-in-out infinite;
    backdrop-filter: blur(10px);
}

.float-icon { font-size: 18px; }

.hero-float-1 { top: 10%; right: -10%; animation-delay: 0s; }
.hero-float-2 { bottom: 20%; left: -15%; animation-delay: 1s; }
.hero-float-3 { bottom: 5%; right: -5%; animation-delay: 2s; }

@keyframes floatBounce {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-10px); }
}

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    z-index: 1;
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--accent), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 1; transform: scaleY(1); }
    50%      { opacity: 0.3; transform: scaleY(0.5); transform-origin: top; }
}

.scroll-indicator span {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--text-muted);
}

/* Marquee */
.marquee {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    overflow: hidden;
    padding: 20px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    z-index: 1;
}

.marquee-track {
    display: flex;
    animation: marqueeScroll 25s linear infinite;
    white-space: nowrap;
}

.marquee-track span {
    font-family: 'JetBrains Mono', monospace;
    font-size: 14px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-muted);
    flex-shrink: 0;
}

@keyframes marqueeScroll {
    0%   { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* === SECTION COMMON === */
.section-header {
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 16px;
    position: relative;
    padding-left: 40px;
}

.section-tag::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 28px;
    height: 1px;
    background: var(--accent);
}

.section-title {
    font-family: 'Outfit', sans-serif;
    font-size: clamp(36px, 5vw, 64px);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -2px;
    text-transform: uppercase;
}

.accent-text {
    color: var(--accent);
}

.sub-title {
    font-family: 'Outfit', sans-serif;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 32px;
    letter-spacing: -0.5px;
}

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

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-bottom: 80px;
}

.bio-text {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 32px;
}

.stat {
    text-align: center;
    padding: 24px 16px;
    background: var(--bg-surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    transition: border-color var(--transition-fast);
}

.stat:hover {
    border-color: var(--accent);
}

.stat-number {
    font-family: 'Outfit', sans-serif;
    font-size: 36px;
    font-weight: 800;
    color: var(--accent);
    display: inline;
}

.stat-suffix {
    font-family: 'Outfit', sans-serif;
    font-size: 20px;
    font-weight: 700;
    color: var(--accent);
}

.stat-label {
    display: block;
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.5px;
}

/* Skills grid */
.skills-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.skill-card {
    padding: 20px;
    background: var(--bg-surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.skill-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.skill-icon {
    margin-bottom: 12px;
}

.skill-name {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
}

.skill-bar {
    height: 4px;
    background: var(--bg-elevated);
    border-radius: 4px;
    overflow: hidden;
}

.skill-fill {
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--accent), var(--accent-alt));
    border-radius: 4px;
    transition: width 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.skill-fill.animated {
    width: var(--fill-width);
}

/* Timeline */
.timeline-section {
    margin-top: 20px;
}

.timeline {
    position: relative;
    padding-left: 32px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--border);
}

.timeline-item {
    position: relative;
    padding-bottom: 48px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -28px;
    top: 6px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--bg-primary);
    border: 2px solid var(--accent);
    z-index: 1;
}

.timeline-content {
    padding: 24px;
    background: var(--bg-surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    transition: border-color var(--transition-fast);
}

.timeline-content:hover {
    border-color: var(--accent);
}

.timeline-date {
    display: inline-block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 8px;
}

.timeline-title {
    font-family: 'Outfit', sans-serif;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 4px;
}

.timeline-company {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.timeline-desc {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

/* === PORTFOLIO SECTION === */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

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

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

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

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

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

.project-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition);
}

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

.project-view {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: #fff;
    padding: 12px 28px;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: var(--radius-pill);
    backdrop-filter: blur(8px);
    transition: background var(--transition-fast), border-color var(--transition-fast);
}

.project-view:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #0a0a0a;
}

.project-info {
    padding: 24px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 12px;
}

.project-title {
    font-family: 'Outfit', sans-serif;
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.project-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.project-badge {
    display: inline-block;
    margin-top: 12px;
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    background: rgba(0,229,160,0.1);
    color: var(--accent);
    border: 1px solid rgba(0,229,160,0.2);
}

.project-badge.gold {
    background: rgba(255,215,0,0.1);
    color: #ffd700;
    border-color: rgba(255,215,0,0.2);
}

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

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-intro {
    font-size: 18px;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 32px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    background: var(--bg-surface);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    transition: border-color var(--transition-fast), color var(--transition-fast);
}

.contact-item:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.contact-item svg {
    flex-shrink: 0;
    color: var(--accent);
}

.contact-item span {
    font-size: 14px;
}

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

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-glow);
    transform: translateY(-3px);
}

/* Contact form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    position: relative;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 18px 20px 8px;
    font-family: 'Inter', sans-serif;
    font-size: 15px;
    color: var(--text-primary);
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group label {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 14px;
    color: var(--text-muted);
    pointer-events: none;
    transition: all var(--transition-fast);
}

.form-group textarea ~ label {
    top: 18px;
    transform: none;
}

.form-group input:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label {
    top: 10px;
    transform: none;
    font-size: 11px;
    color: var(--accent);
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.5px;
}

.form-group textarea:focus ~ label,
.form-group textarea:not(:placeholder-shown) ~ label {
    top: 6px;
    font-size: 11px;
    color: var(--accent);
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.5px;
}

.form-error {
    display: none;
    font-size: 12px;
    color: #ff4d4d;
    margin-top: 6px;
    font-family: 'JetBrains Mono', monospace;
}

.form-error.visible {
    display: block;
}

.form-group.error input,
.form-group.error textarea {
    border-color: #ff4d4d;
}

.btn-submit {
    align-self: flex-start;
    min-width: 200px;
    justify-content: center;
}

.form-success {
    display: none;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    background: var(--accent-glow);
    border: 1px solid rgba(0,229,160,0.2);
    font-size: 14px;
    color: var(--accent);
}

.form-success.visible {
    display: flex;
}

/* === MODAL === */
.modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.modal.open {
    opacity: 1;
    visibility: visible;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.8);
    backdrop-filter: blur(8px);
}

.modal-content {
    position: relative;
    max-width: 700px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    transform: scale(0.9) translateY(30px);
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.modal.open .modal-content {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
    transition: border-color var(--transition-fast);
}

.modal-close:hover {
    border-color: var(--accent);
}

.modal-image img {
    width: 100%;
    aspect-ratio: 16/10;
    object-fit: cover;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.modal-body {
    padding: 28px;
}

.modal-body h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.modal-body p {
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

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

/* === FOOTER === */
.footer {
    padding: 40px 0;
    border-top: 1px solid var(--border);
}

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

.footer p {
    font-size: 13px;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

.back-to-top {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

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

/* === SCROLL REVEAL === */
.reveal-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* === RESPONSIVE === */

/* Tablet (768px) */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .hero-content {
        align-items: center;
    }

    .hero-tag { justify-content: center; }

    .hero-subtitle {
        margin: 0 auto;
    }

    .hero-cta { justify-content: center; }

    .hero-image-wrapper {
        width: 300px;
        height: 360px;
    }

    .hero-float { display: none; }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-stats {
        grid-template-columns: repeat(3, 1fr);
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .status-badge .status-text { display: none; }
    .status-badge { padding: 8px; }
}

/* Mobile (480px) */
@media (max-width: 600px) {
    :root {
        --header-h: 64px;
    }

    .section {
        padding: 80px 0;
    }

    .hero-title {
        letter-spacing: -1px;
    }

    .hero-image-wrapper {
        width: 240px;
        height: 300px;
    }

    .about-stats {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .stat {
        padding: 16px;
    }

    .stat-number {
        font-size: 28px;
    }

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

    .section-title {
        letter-spacing: -1px;
    }

    .btn {
        padding: 12px 24px;
        font-size: 13px;
    }

    .marquee-track span {
        font-size: 11px;
    }

    .scroll-indicator {
        bottom: 80px;
    }

    .project-title {
        font-size: 18px;
    }

    .project-info {
        padding: 16px;
    }

    .modal-body h3 {
        font-size: 22px;
    }
}

/* Large Desktop (1440px+) */
@media (min-width: 1440px) {
    :root {
        --container-max: 1400px;
    }

    html {
        font-size: 17px;
    }
}

/* 4K (2560px+) */
@media (min-width: 2560px) {
    :root {
        --container-max: 1800px;
    }

    html {
        font-size: 20px;
    }

    .hero-image-wrapper {
        width: 500px;
        height: 600px;
    }

    .section {
        padding: 160px 0;
    }
}