/* ============================
   Pixel Retro Fonts
   ============================ */
@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&display=swap');

/* ============================
   CSS Variables & Reset
   ============================ */
:root {
    --bg-primary: #0a1628;
    --bg-secondary: #0d2035;
    --bg-card: #0f2a3d;
    --bg-card-hover: #143248;
    --text-primary: #e8f4f8;
    --text-secondary: #8ab4c2;
    --text-muted: #4a7a8a;
    --accent-1: #2a9d8f;
    --accent-2: #e9c46a;
    --accent-3: #f4a261;
    --accent-4: #e76f51;
    --gradient: linear-gradient(135deg, var(--accent-1), var(--accent-2), var(--accent-3));
    --gradient-text: linear-gradient(135deg, #2a9d8f, #e9c46a, #f4a261);
    --border: rgba(42, 157, 143, 0.15);
    --border-hover: rgba(42, 157, 143, 0.3);
    --shadow-sm: 4px 4px 0px rgba(0, 0, 0, 0.5);
    --shadow-md: 6px 6px 0px rgba(0, 0, 0, 0.6);
    --shadow-lg: 8px 8px 0px rgba(0, 0, 0, 0.7);
    --shadow-glow: 0 0 20px rgba(42, 157, 143, 0.25);
    --radius-sm: 0px;
    --radius-md: 0px;
    --radius-lg: 0px;
    --radius-xl: 0px;
    --transition: 0.15s steps(3);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-pixel: 'Press Start 2P', monospace;
    /* Pixel border helpers */
    --pixel-border: 3px solid var(--accent-1);
    --pixel-shadow: 4px 4px 0 #000;
    --px-shadow: #000;
}

/* Light theme */
[data-theme="light"] {
    --bg-primary: #f0ede8;
    --bg-secondary: #e4e0d8;
    --bg-card: #ffffff;
    --bg-card-hover: #f5f2ee;
    --text-primary: #0a1628;
    --text-secondary: #2a4a5a;
    --text-muted: #5a7a8a;
    --accent-1: #2a9d8f;
    --accent-2: #c8941a;
    --accent-3: #d4601a;
    --accent-4: #e76f51;
    --gradient: linear-gradient(135deg, var(--accent-1), var(--accent-2), var(--accent-3));
    --gradient-text: linear-gradient(135deg, #2a9d8f, #c8941a, #d4601a);
    --border: rgba(42, 157, 143, 0.2);
    --border-hover: rgba(42, 157, 143, 0.4);
    --shadow-sm: 4px 4px 0px rgba(0, 0, 0, 0.2);
    --shadow-md: 6px 6px 0px rgba(0, 0, 0, 0.25);
    --shadow-lg: 8px 8px 0px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(42, 157, 143, 0.15);
    --px-shadow: rgba(0,0,0,0.28);
}

[data-theme="light"] .header.scrolled {
    background: rgba(240, 237, 232, 0.92);
    backdrop-filter: blur(20px);
}

[data-theme="light"] .hero-bg::after {
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.025) 0px,
        rgba(0, 0, 0, 0.025) 1px,
        transparent 1px,
        transparent 4px
    );
}

[data-theme="light"] .hero-grid {
    background-image:
        linear-gradient(rgba(42, 157, 143, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(42, 157, 143, 0.1) 1px, transparent 1px);
}

[data-theme="light"] .hero-gradient {
    background: radial-gradient(circle, rgba(42, 157, 143, 0.1) 0%, rgba(233, 196, 106, 0.06) 40%, transparent 70%);
}

/* Light theme: softer pixel shadows */
[data-theme="light"] .btn-primary {
    box-shadow: 4px 4px 0 rgba(0,0,0,0.35);
}
[data-theme="light"] .btn-primary:hover {
    box-shadow: 6px 6px 0 rgba(0,0,0,0.35);
}
[data-theme="light"] .btn-ghost {
    color: var(--accent-1);
    border-color: var(--accent-1);
    box-shadow: 4px 4px 0 rgba(0,0,0,0.2);
}
[data-theme="light"] .btn-ghost:hover {
    background: rgba(42, 157, 143, 0.08);
    box-shadow: 6px 6px 0 rgba(0,0,0,0.2);
}

[data-theme="light"] .hero-badge {
    box-shadow: 3px 3px 0 rgba(0,0,0,0.15);
}

[data-theme="light"] .section-label {
    box-shadow: 2px 2px 0 rgba(0,0,0,0.15);
}

[data-theme="light"] .skill-tag {
    background: rgba(42, 157, 143, 0.08);
    box-shadow: 2px 2px 0 rgba(0,0,0,0.15);
}

[data-theme="light"] .course-card {
    box-shadow: 5px 5px 0 rgba(0,0,0,0.2);
}
[data-theme="light"] .course-card:hover {
    box-shadow: 8px 8px 0 rgba(0,0,0,0.2);
}
[data-theme="light"] .course-card.featured {
    box-shadow: 5px 5px 0 var(--accent-1);
}

[data-theme="light"] .course-badge {
    box-shadow: 2px 2px 0 rgba(0,0,0,0.15);
}

/* Retro terminal stays dark even in light theme */
[data-theme="light"] .code-window {
    background: #0d1f2d;
    border-color: var(--accent-1);
    box-shadow: 8px 8px 0 rgba(0,0,0,0.3), 0 0 20px rgba(42,157,143,0.15);
}
[data-theme="light"] .code-body {
    color: #c8e6e0;
}

[data-theme="light"] .nav {
    background: var(--bg-secondary);
}

[data-theme="light"] .course-features li svg {
    color: var(--accent-3);
}

[data-theme="light"] .nav-overlay {
    background: rgba(0, 0, 0, 0.3);
}

/* Light theme service/feature cards */
[data-theme="light"] .service-card,
[data-theme="light"] .feature-card,
[data-theme="light"] .pricing-card,
[data-theme="light"] .faq-item,
[data-theme="light"] .portfolio-card,
[data-theme="light"] .step-card {
    box-shadow: 4px 4px 0 rgba(0,0,0,0.15) !important;
}
[data-theme="light"] .service-card:hover,
[data-theme="light"] .feature-card:hover,
[data-theme="light"] .pricing-card:hover,
[data-theme="light"] .portfolio-card:hover,
[data-theme="light"] .step-card:hover {
    box-shadow: 7px 7px 0 rgba(0,0,0,0.15) !important;
}

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

/* ============================
   Theme Toggle
   ============================ */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border);
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
    flex-shrink: 0;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border-color: var(--border-hover);
}

[data-theme="light"] .theme-toggle {
    background: rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .theme-toggle:hover {
    background: rgba(0, 0, 0, 0.08);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
    transition: var(--transition);
}

.theme-toggle .icon-sun {
    display: none;
}

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

[data-theme="light"] .theme-toggle .icon-sun {
    display: block;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: clip;
}

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    max-width: 100vw;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

/* ============================
   Utilities
   ============================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section {
    padding: 100px 0;
    position: relative;
}

.section-label {
    display: inline-flex;
    align-items: center;
    font-size: 10px;
    font-family: var(--font-pixel);
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--accent-1);
    margin-bottom: 16px;
    padding: 4px 10px;
    border: 2px solid var(--accent-1);
    box-shadow: 2px 2px 0 var(--px-shadow);
}

.text-center .section-label,
.section-label + .section-title.text-center {
    display: block;
}

.section-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.section-desc {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 48px;
    line-height: 1.7;
}

/* ============================
   Animations
   ============================ */
.animate-fade-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }
.delay-3 { animation-delay: 0.45s; }
.delay-4 { animation-delay: 0.6s; }

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* ============================
   Buttons — Pixel Style
   ============================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-pixel);
    font-size: 11px;
    font-weight: 400;
    padding: 12px 24px;
    border-radius: 0;
    border: 2px solid transparent;
    cursor: pointer;
    transition: transform 0.1s steps(2), box-shadow 0.1s steps(2);
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
}

.btn-primary {
    background: var(--accent-1);
    color: #fff;
    border-color: #1a6b5f;
    box-shadow: 4px 4px 0 var(--px-shadow);
}

.btn-primary:hover {
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0 var(--px-shadow);
    background: #33b8a8;
    color: #fff;
}

.btn-primary:active {
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0 var(--px-shadow);
}

.btn-ghost {
    background: transparent;
    color: var(--accent-2);
    border: 2px solid var(--accent-2);
    box-shadow: 4px 4px 0 var(--px-shadow);
}

.btn-ghost:hover {
    background: rgba(233, 196, 106, 0.1);
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0 var(--px-shadow);
    color: var(--accent-2);
}

.btn-ghost:active {
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0 var(--px-shadow);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 10px;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 12px;
}

/* ============================
   Header
   ============================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    filter: drop-shadow(2px 2px 0 rgba(42,157,143,0.5));
}

.logo-text {
    font-family: var(--font-pixel) !important;
    font-size: 14px !important;
    font-weight: 400 !important;
    letter-spacing: 0.05em;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
}

.logo-icon {
    display: none;
}

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

.nav-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: var(--transition);
    border-radius: 1px;
}

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

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

.burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.burger span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.burger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.burger.active span:nth-child(2) {
    opacity: 0;
}

.burger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

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

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-gradient {
    position: absolute;
    top: -20%;
    left: 40%;
    transform: translateX(-50%);
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(42, 157, 143, 0.12) 0%, rgba(233, 196, 106, 0.06) 40%, transparent 70%);
    filter: blur(40px);
}

/* Scanline retro effect */
.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.04) 0px,
        rgba(0, 0, 0, 0.04) 1px,
        transparent 1px,
        transparent 4px
    );
    pointer-events: none;
    z-index: 2;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(42, 157, 143, 0.07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(42, 157, 143, 0.07) 1px, transparent 1px);
    background-size: 32px 32px;
    mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(42, 157, 143, 0.1);
    border: 2px solid var(--accent-1);
    border-radius: 0;
    font-size: 11px;
    font-weight: 500;
    font-family: var(--font-pixel);
    color: var(--accent-1);
    margin-bottom: 24px;
    box-shadow: 3px 3px 0 var(--px-shadow);
    text-transform: uppercase;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-1);
    border-radius: 0;
    animation: pixel-blink 1s steps(1) infinite;
}

@keyframes pixel-blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.hero-title {
    font-size: clamp(28px, 4.5vw, 52px);
    font-weight: 900;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
}

.hero-desc {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 520px;
    margin-bottom: 36px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 24px;
}

.stat-value {
    display: block;
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 13px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-hover);
}

/* Code Window — Retro Terminal */
.code-window {
    background: #060e1a;
    border: 3px solid var(--accent-1);
    border-radius: 0;
    overflow: hidden;
    box-shadow: 8px 8px 0 var(--px-shadow), 0 0 30px rgba(42,157,143,0.2);
    position: relative;
}

.code-window::before {
    content: '';
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        0deg,
        rgba(42, 157, 143, 0.02) 0px,
        rgba(42, 157, 143, 0.02) 1px,
        transparent 1px,
        transparent 3px
    );
    pointer-events: none;
    z-index: 1;
}

.code-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    background: var(--accent-1);
    border-bottom: 3px solid #1a6b5f;
}

.code-dots {
    display: flex;
    gap: 5px;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 0;
}

.dot.red { background: var(--accent-4); box-shadow: 1px 1px 0 var(--px-shadow); }
.dot.yellow { background: var(--accent-2); box-shadow: 1px 1px 0 var(--px-shadow); }
.dot.green { background: #a8dadc; box-shadow: 1px 1px 0 var(--px-shadow); }

.code-title {
    font-size: 9px;
    font-family: var(--font-pixel);
    color: #fff;
    font-weight: 400;
    letter-spacing: 0.1em;
}

.code-body {
    padding: 20px;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 14px;
    line-height: 1.8;
}

.code-line {
    display: flex;
    align-items: center;
    gap: 16px;
    min-height: 26px;
}

.line-num {
    color: var(--text-muted);
    font-size: 12px;
    min-width: 16px;
    text-align: right;
    user-select: none;
}

.code-keyword { color: #c792ea; }
.code-module { color: #82aaff; }
.code-func { color: #82aaff; }
.code-var { color: #f0f0f5; }
.code-param { color: #f78c6c; }
.code-string { color: #c3e88d; }
.code-comment { color: #546e7a; }

.code-line.typing::after {
    content: '|';
    color: var(--accent-2);
    animation: blink 1s infinite;
    margin-left: 2px;
}

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

/* ============================
   About
   ============================ */
.about-grid {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 60px;
    align-items: center;
}

.photo-frame {
    position: relative;
    width: 300px;
    height: 360px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
}

.photo-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-card));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.photo-emoji {
    font-size: 80px;
}

.photo-text {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-secondary);
}

.photo-decoration {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(108, 92, 231, 0.1));
    pointer-events: none;
}

.about-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    padding: 10px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 14px;
    color: var(--text-secondary);
}

.about-text {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.about-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 28px;
}

.skill-tag {
    padding: 6px 14px;
    background: rgba(42, 157, 143, 0.1);
    border: 2px solid var(--accent-1);
    border-radius: 0;
    font-size: 11px;
    font-weight: 500;
    font-family: var(--font-pixel);
    color: var(--accent-1);
    box-shadow: 2px 2px 0 var(--px-shadow);
}

/* ============================
   Courses
   ============================ */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 24px;
}

.course-card {
    position: relative;
    background: var(--bg-card);
    border: 2px solid var(--accent-1);
    border-radius: 0;
    padding: 32px 28px;
    transition: transform 0.1s steps(2), box-shadow 0.1s steps(2);
    display: flex;
    flex-direction: column;
    box-shadow: 5px 5px 0 var(--px-shadow);
}

.course-card:hover {
    transform: translate(-3px, -3px);
    box-shadow: 8px 8px 0 var(--px-shadow);
}

.course-card.featured {
    border-color: var(--accent-2);
    background: linear-gradient(135deg, rgba(42, 157, 143, 0.08), rgba(233, 196, 106, 0.04));
    box-shadow: 5px 5px 0 var(--accent-1);
}

.course-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 4px 10px;
    background: rgba(42, 157, 143, 0.1);
    border: 2px solid var(--border-hover);
    border-radius: 0;
    font-size: 9px;
    font-family: var(--font-pixel);
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    box-shadow: 2px 2px 0 var(--px-shadow);
}

.course-badge.accent {
    background: rgba(233, 196, 106, 0.15);
    border-color: var(--accent-2);
    color: var(--accent-2);
}

.course-icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.course-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.course-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
    flex-grow: 1;
}

.course-features {
    margin-bottom: 28px;
}

.course-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text-secondary);
    padding: 6px 0;
}

.course-features li svg {
    color: var(--accent-3);
    flex-shrink: 0;
}

.course-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    margin-top: auto;
}

.course-price {
    font-size: 22px;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.2;
    white-space: nowrap;
    flex-shrink: 0;
}

.course-price small {
    display: block;
    font-size: 12px;
    font-weight: 500;
    opacity: 0.65;
    letter-spacing: 0;
    margin-top: 2px;
}

.course-stats {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
}

.course-stat {
    flex: 1;
    background: rgba(108, 92, 231, 0.07);
    border: 1px solid rgba(108, 92, 231, 0.15);
    border-radius: 10px;
    padding: 9px 10px;
    text-align: center;
}

.course-stat .cs-val {
    font-size: 17px;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
}

.course-stat .cs-lbl {
    font-size: 10px;
    color: var(--text-muted);
    margin-top: 3px;
    line-height: 1.3;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.course-result {
    margin: 0 0 20px;
    padding: 10px 14px;
    background: rgba(22, 163, 74, 0.08);
    border: 1px solid rgba(22, 163, 74, 0.2);
    border-radius: 10px;
    font-size: 13px;
    color: #16a34a;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

[data-theme="dark"] .course-result {
    background: rgba(22, 163, 74, 0.12);
    color: #4ade80;
}

/* ============================
   Steps
   ============================ */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.step {
    text-align: center;
    padding: 32px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    transition: var(--transition);
}

.step:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
}

.step-num {
    font-size: 48px;
    font-weight: 900;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    line-height: 1;
}

.step-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
}

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

/* ============================
   Portfolio
   ============================ */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.portfolio-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: var(--transition);
}

.portfolio-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
}

.portfolio-preview {
    height: 200px;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-card));
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--border);
}

.portfolio-placeholder {
    font-size: 64px;
    opacity: 0.7;
}

.portfolio-info {
    padding: 24px;
}

.portfolio-info h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.portfolio-info p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

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

.portfolio-tags span {
    padding: 4px 12px;
    background: rgba(108, 92, 231, 0.08);
    border: 1px solid rgba(108, 92, 231, 0.15);
    border-radius: 50px;
    font-size: 12px;
    color: var(--accent-2);
    font-weight: 500;
}

.portfolio-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 14px;
    padding: 7px 16px;
    background: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.25);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    color: #2563eb;
    text-decoration: none;
    transition: var(--transition);
}

.portfolio-link:hover {
    background: #2563eb;
    color: #fff;
    border-color: #2563eb;
}

[data-theme="dark"] .portfolio-link {
    background: rgba(96, 165, 250, 0.1);
    border-color: rgba(96, 165, 250, 0.25);
    color: #60a5fa;
}

[data-theme="dark"] .portfolio-link:hover {
    background: #2563eb;
    color: #fff;
}

/* ============================
   Testimonials
   ============================ */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 32px;
    transition: var(--transition);
}

.testimonial-card:hover {
    border-color: var(--border-hover);
}

.testimonial-stars {
    font-size: 16px;
    color: #fbbf24;
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.testimonial-text {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 16px;
    color: white;
}

.author-name {
    font-size: 14px;
    font-weight: 600;
}

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

/* ============================
   FAQ
   ============================ */
.faq-list {
    max-width: 720px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--border);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 24px 0;
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--font);
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    text-align: left;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--accent-2);
}

.faq-icon {
    flex-shrink: 0;
    transition: var(--transition);
    color: var(--text-muted);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
    color: var(--accent-2);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
    max-height: 200px;
    padding-bottom: 24px;
}

.faq-answer p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================
   CTA
   ============================ */
.cta-card {
    position: relative;
    text-align: center;
    padding: 80px 40px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.cta-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 0, rgba(108, 92, 231, 0.12) 0%, transparent 60%);
    pointer-events: none;
}

.cta-title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 800;
    margin-bottom: 16px;
    position: relative;
}

.cta-desc {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 36px;
    position: relative;
}

.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
}

/* ============================
   Footer
   ============================ */
.footer {
    padding: 60px 0 30px;
    border-top: 1px solid var(--border);
}

.footer-top {
    display: flex;
    justify-content: space-between;
    gap: 48px;
    padding-bottom: 40px;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--border);
}

.footer-tagline {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 12px;
    max-width: 280px;
}

.footer-links {
    display: flex;
    gap: 60px;
}

.footer-col h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.footer-col a {
    display: block;
    font-size: 14px;
    color: var(--text-secondary);
    padding: 4px 0;
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--text-muted);
}

/* ============================
   Mobile Responsive
   ============================ */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-desc {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }

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

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

    .hero-visual {
        max-width: 500px;
        width: 100%;
        margin: 0 auto;
        overflow: hidden;
    }

    .about-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about-photo {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .about-skills {
        justify-content: center;
    }

    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (max-width: 768px) {
    .section {
        padding: 70px 0;
    }

    .nav {
        position: fixed;
        top: 0;
        right: 0;
        width: 280px;
        height: 100vh;
        background: var(--bg-secondary);
        flex-direction: column;
        padding: 80px 32px 32px;
        gap: 0;
        transition: var(--transition);
        border-left: 1px solid var(--border);
        z-index: 999;
        transform: translateX(100%);
    }

    .nav.active {
        transform: translateX(0);
    }

    .nav-link {
        font-size: 18px;
        padding: 16px 0;
        border-bottom: 1px solid var(--border);
        width: 100%;
    }

    .nav-link::after {
        display: none;
    }

    .burger {
        display: flex;
        z-index: 1001;
    }

    .hero {
        min-height: auto;
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: clamp(32px, 8vw, 48px);
    }

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

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

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

    .footer-top {
        flex-direction: column;
        gap: 32px;
    }

    .footer-links {
        gap: 40px;
    }

    .footer-bottom {
        padding-right: 72px;
    }

    .code-body {
        font-size: 12px;
        padding: 14px;
        overflow-x: hidden;
    }

    .code-window {
        max-width: 100%;
        overflow: hidden;
    }

    .hero-gradient {
        width: 100vw;
        max-width: 600px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 16px;
    }

    .stat-divider {
        width: 40px;
        height: 1px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

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

    .cta-card {
        padding: 48px 24px;
    }

    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
}

/* ============================
   Overlay for mobile menu
   ============================ */
.nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 998;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
}

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

/* ===== Green accent additions ===== */
:root {
    --green: #22c55e;
    --green-dark: #16a34a;
    --green-glow: rgba(34, 197, 94, 0.2);
}

/* Зелёный badge (accent) */
.course-badge.accent {
    background: linear-gradient(135deg, var(--green), #16a34a);
    color: #fff;
}

/* Зелёная featured карточка — левый бордер */
.course-card.featured {
    border-color: var(--green);
    box-shadow: 0 0 30px var(--green-glow);
}

/* Галочки в featured карточке — зелёные */
.course-card.featured .course-features li svg {
    stroke: var(--green);
}

/* Stat-value — добавить зелёный для первого */
.hero-stats .stat:first-child .stat-value {
    color: var(--green);
}

/* Skill-tags — зелёная обводка */
.skill-tag {
    border-color: var(--green) !important;
    color: var(--green) !important;
}

/* Section label — зелёный */
.section-label {
    color: var(--green) !important;
    border-color: var(--green-glow) !important;
    background: var(--green-glow) !important;
}

/* Step номера — зелёный */
.step-num {
    color: var(--green) !important;
}

/* Portfolio tags — зелёный фон */
.portfolio-tags span {
    background: var(--green-glow) !important;
    color: var(--green) !important;
}

/* Testimonial stars — зелёные */
.testimonial-stars {
    color: var(--green) !important;
}

/* Badge dot в hero */
.badge-dot {
    background: var(--green) !important;
    box-shadow: 0 0 8px var(--green) !important;
}

/* Portfolio featured card (Codary) — responsive */
@media (max-width: 768px) {
    .portfolio-card.portfolio-featured,
    .portfolio-card.portfolio-featured-wide {
        flex-direction: column !important;
        grid-column: 1 / -1;
    }
    .portfolio-card.portfolio-featured .portfolio-preview,
    .portfolio-card.portfolio-featured-wide .portfolio-preview {
        min-width: unset !important;
        width: 100% !important;
        min-height: 200px !important;
        flex-shrink: 0;
    }
    .portfolio-card.portfolio-featured .portfolio-info {
        overflow: hidden;
        width: 100%;
    }
}

/* Avoid chat-widget button overlap on mobile */
@media (max-width: 480px) {
    .course-result {
        padding-right: 70px;
    }
    .portfolio-info p,
    .portfolio-info h3 {
        padding-right: 0;
    }
}