/* ===================================
   Design Tokens
   =================================== */
:root {
    /* Colors */
    --color-bg: #f0f0f0;
    --color-bg-card: #e8e8e8;
    --color-bg-white: #ffffff;
    --color-text-primary: #1a1a1a;
    --color-text-secondary: #666666;
    --color-accent: #ff6b35;
    --color-header-dark: #1a1a2e;

    /* Typography */
    --font-family: "JetBrains Mono", "Fira Code", "SF Mono", monospace;
    --font-size-base: 16px;
    --font-size-sm: 14px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-2xl: 32px;
    --font-size-3xl: 40px;
    --font-size-hero: 48px;
    --font-size-hero-lg: 64px;

    /* Spacing */
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 32px;
    --space-xl: 48px;
    --space-2xl: 64px;
    --space-3xl: 96px;

    /* Layout */
    --container-max: 1200px;
    --header-height: 80px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul {
    list-style: none;
}

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

/* ===================================
   Layout
   =================================== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ===================================
   Header & Navigation
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--color-bg);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: background-color var(--transition-base), border-color var(--transition-base);
}

.header.scrolled {
    background-color: var(--color-accent);
    border-bottom-color: transparent;
}

.header.scrolled .logo,
.header.scrolled .nav-links a {
    color: #ffffff;
}

.header.scrolled .logo:hover,
.header.scrolled .nav-links a:hover {
    color: var(--color-text-primary);
}

.header.scrolled .btn-bracket {
    border-color: #ffffff;
    color: #ffffff;
}

.header.scrolled .btn-bracket::before,
.header.scrolled .btn-bracket::after {
    color: #ffffff;
}

.header.scrolled .btn-bracket:hover {
    background-color: #ffffff;
    color: var(--color-accent);
}

.header.scrolled .btn-bracket:hover::before,
.header.scrolled .btn-bracket:hover::after {
    color: var(--color-accent);
}

/* Mobile hamburger icon in scrolled state */
.header.scrolled .hamburger,
.header.scrolled .hamburger::before,
.header.scrolled .hamburger::after {
    background-color: #ffffff;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    font-size: var(--font-size-lg);
    font-weight: 700;
    letter-spacing: -0.5px;
    transition: color var(--transition-fast);
}

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

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

.nav-links a {
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
    z-index: 1001;
}

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

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-text-primary);
    transition: transform var(--transition-base);
}

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

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

/* Mobile menu active state */
.mobile-menu-btn.active .hamburger {
    background-color: transparent;
}

.mobile-menu-btn.active .hamburger::before {
    transform: translateY(8px) rotate(45deg);
}

.mobile-menu-btn.active .hamburger::after {
    transform: translateY(-8px) rotate(-45deg);
}

/* ===================================
   Bracket Button Component
   =================================== */
.btn-bracket {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 12px 20px;
    background: transparent;
    border: none;
    font-family: inherit;
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-bracket::before {
    content: '[';
    color: var(--color-accent);
}

.btn-bracket::after {
    content: ']';
    color: var(--color-accent);
}

.btn-bracket:hover {
    color: var(--color-accent);
}

.btn-large {
    font-size: var(--font-size-lg);
    padding: 16px 32px;
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: var(--header-height);
    text-align: center;
    background-image:
        linear-gradient(rgba(0, 0, 0, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    background-position: center center;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 25% 25%, rgba(255, 107, 53, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(255, 107, 53, 0.02) 0%, transparent 50%);
    animation: gridPulse 8s ease-in-out infinite;
    pointer-events: none;
}

@keyframes gridPulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
}

.hero-nav-arrows {
    display: flex;
    justify-content: center;
    gap: var(--space-3xl);
    margin: var(--space-lg) 0;
}

.nav-arrow {
    font-size: var(--font-size-xl);
    color: var(--color-accent);
    opacity: 0.5;
    user-select: none;
}

.hero-title {
    font-size: var(--font-size-hero);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -2px;
    margin-bottom: var(--space-md);
}

.hero-break {
    display: block;  /* Force line break on desktop */
}

.hero-break-2 {
    display: none;  /* Hidden on desktop - keeps 2-line layout */
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.7;
}

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

/* Cycling Word Animation */
.cycling-word {
    display: inline-block;
    position: relative;
    vertical-align: baseline;
    transition: width 0.3s ease;  /* Smooth width animation */
}

.cycling-word__text {
    display: inline-block;
    transition: opacity 0.4s ease, transform 0.4s ease;
    text-shadow: 0 0 20px rgba(255, 107, 53, 0.3);
}

.cycling-word__text.fade-out {
    opacity: 0;
    transform: translateY(-12px);
}

.cycling-word__text.fade-in {
    opacity: 0;
    transform: translateY(12px);
}

@media (prefers-reduced-motion: reduce) {
    .cycling-word {
        transition: none;
    }
    .cycling-word__text {
        transition: none;
    }
    .cycling-word__text.fade-out,
    .cycling-word__text.fade-in {
        transform: none;
    }
}

.scroll-indicator {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    color: var(--color-accent);
    opacity: 0.5;
    animation: bounce 2s infinite;
    transition: opacity var(--transition-fast);
}

.scroll-indicator:hover {
    opacity: 1;
    color: var(--color-accent);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-8px);
    }
    60% {
        transform: translateX(-50%) translateY(-4px);
    }
}

/* ===================================
   Section Styles
   =================================== */
section {
    padding: var(--space-3xl) 0;
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    letter-spacing: -1px;
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
}

/* ===================================
   Solutions Section
   =================================== */
.solutions {
    background-color: var(--color-bg-white);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

/* ===================================
   Card Component
   =================================== */
.card {
    position: relative;
    background-color: var(--color-bg-card);
    padding: var(--space-lg);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    overflow: hidden;
}

/* Background image layer */
.card::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: var(--card-bg);
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 0;
}

/* Dark overlay for text readability */
.card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0.5) 0%,
        rgba(0, 0, 0, 0.85) 100%
    );
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 1;
}

/* Orange corner dot elements */
.card-dot {
    position: absolute;
    width: 8px;
    height: 8px;
    background-color: var(--color-accent);
    transition: transform var(--transition-base);
    z-index: 3;
}

.card-dot--top {
    top: 12px;
    right: 12px;
}

.card-dot--bottom {
    bottom: 12px;
    left: 12px;
}

/* Ensure content stays above image layers */
.card > *:not(.card-dot) {
    position: relative;
    z-index: 2;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

/* Show image and overlay on hover (devices with hover) */
@media (hover: hover) {
    .card:hover::before {
        opacity: 1;
    }

    .card:hover::after {
        opacity: 1;
    }

    .card:hover .card-dot {
        transform: scale(1.5);
    }

    /* Text color changes on hover */
    .card:hover .card-icon {
        color: white;
    }

    .card:hover .card-title {
        color: white;
    }

    .card:hover .card-description {
        color: rgba(255, 255, 255, 0.95);
    }
}

.card-icon {
    margin-bottom: var(--space-md);
    color: var(--color-text-primary);
    transition: color 0.4s ease;
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    transition: color 0.4s ease;
}

.card-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.7;
    transition: color 0.4s ease;
}

/* ===================================
   About Section
   =================================== */
.about {
    background-color: var(--color-bg);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--space-2xl);
    align-items: start;
}

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

.about-tagline {
    font-size: var(--font-size-base);
    font-style: italic;
    color: var(--color-accent);
    margin-bottom: var(--space-xl);
}

/* ===================================
   Principles Section
   =================================== */
.principles-section {
    background-color: var(--color-header-dark);
    color: var(--color-bg);
}

.principles-section .section-title {
    color: var(--color-bg);
}

.principles-section .section-subtitle {
    color: rgba(255, 255, 255, 0.7);
}

.principles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.principle-card {
    background: rgba(255, 255, 255, 0.05);
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 20px 20px;
    padding: var(--space-lg);
    transition: transform var(--transition-base), background-color var(--transition-base);
}

.principle-card:hover {
    transform: translateY(-4px);
    background-color: rgba(255, 255, 255, 0.08);
}

.principle-icon {
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.principle-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--color-bg);
}

.principle-text {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

/* ===================================
   Tech Stack Marquee Section
   =================================== */
.tech-stack-section {
    background-color: var(--color-bg-card);
    padding: var(--space-lg) 0;
    overflow: hidden;
    position: relative;
}

/* Fade edges for polished look */
.tech-stack-section::before,
.tech-stack-section::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 100px;
    z-index: 2;
    pointer-events: none;
}

.tech-stack-section::before {
    left: 0;
    background: linear-gradient(to right, var(--color-bg-card), transparent);
}

.tech-stack-section::after {
    right: 0;
    background: linear-gradient(to left, var(--color-bg-card), transparent);
}

.tech-stack-marquee {
    overflow: hidden;
}

.tech-stack-track {
    display: flex;
    gap: var(--space-xl);
    animation: none;  /* Paused until JS is ready */
    width: max-content;
}

.tech-stack-track.running {
    animation: marquee-scroll 30s linear infinite;
}

.tech-stack-track img {
    height: 40px;
    width: auto;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: filter 0.3s ease, opacity 0.3s ease;
}

.tech-stack-track img:hover {
    filter: grayscale(0%);
    opacity: 1;
}

/* Keyframes injected dynamically by JS based on measured content width */

/* Accessibility: pause animation for reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    .tech-stack-track {
        animation-play-state: paused;
    }
}

/* About Image */
.about-image {
    position: relative;
    overflow: hidden;
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 400px;
}

/* Orange corner accent dots */
.about-image::before,
.about-image::after {
    content: '';
    position: absolute;
    width: 12px;
    height: 12px;
    background-color: var(--color-accent);
    z-index: 1;
}

.about-image::before {
    top: 16px;
    right: 16px;
}

.about-image::after {
    bottom: 16px;
    left: 16px;
}

/* ===================================
   Contact Section
   =================================== */
.contact {
    background-color: var(--color-bg-white);
    color: var(--color-text-primary);
    text-align: center;
    padding: var(--space-xl) 0;
}

.contact .section-title {
    color: var(--color-text-primary);
    margin-bottom: var(--space-xs);
}

.contact-text {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    margin-bottom: var(--space-md);
}

.contact-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    transition: color var(--transition-fast);
}

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

.contact-label {
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-secondary);
}

.contact-value {
    font-size: var(--font-size-sm);
}

.contact .btn-bracket {
    color: var(--color-text-primary);
}

.contact .btn-bracket:hover {
    color: var(--color-accent);
}

/* ===================================
   Contact Modal
   =================================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

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

.modal-content {
    background-color: var(--color-header-dark);
    color: #fff;
    width: 90%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    padding: var(--space-xl);
    position: relative;
    background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 20px 20px;
    transform: translateY(20px);
    transition: transform var(--transition-base);
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
}

.modal-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    letter-spacing: -0.5px;
}

.modal-close {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.6);
    cursor: pointer;
    padding: var(--space-xs);
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: #fff;
}

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

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--space-xs);
    color: rgba(255, 255, 255, 0.8);
}

.form-label span {
    color: var(--color-accent);
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 0;
    color: #fff;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    transition: border-color var(--transition-fast), background var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-accent);
    background: rgba(255, 255, 255, 0.1);
}

.form-input.invalid {
    border-color: #e74c3c;
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-error {
    display: block;
    font-size: 12px;
    color: #e74c3c;
    margin-top: 4px;
    min-height: 18px;
}

.form-submit {
    width: 100%;
    justify-content: center;
    color: #fff;
    margin-top: var(--space-sm);
    position: relative;
}

.form-submit:hover {
    color: var(--color-accent);
}

.form-submit.loading {
    color: transparent;
    pointer-events: none;
}

.form-submit.loading::before,
.form-submit.loading::after {
    content: none;
}

.form-submit.loading .submit-spinner {
    display: block;
}

.submit-spinner {
    display: none;
    position: absolute;
    inset: 0;
    margin: auto;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

.form-status {
    margin-top: var(--space-sm);
    font-size: var(--font-size-sm);
    text-align: center;
    min-height: 24px;
}

.form-status.success {
    color: #2ecc71;
}

.form-status.error {
    color: #e74c3c;
}

body.modal-open {
    overflow: hidden;
}

@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        padding: var(--space-lg) var(--space-md);
    }
}

/* ===================================
   Footer - Watermark Brand Design
   =================================== */
.footer {
    background-color: var(--color-header-dark);
    padding: var(--space-3xl) 0 var(--space-md);
    position: relative;
    overflow: hidden;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    min-height: 200px;
    gap: 0;
}

.footer-watermark {
    font-family: var(--font-family);
    font-weight: 700;
    text-transform: uppercase;
    user-select: none;
    line-height: 0.85;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, rgba(255, 107, 53, 0.08) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-watermark-top {
    font-size: clamp(40px, 11vw, 160px);
    letter-spacing: 0.15em;
}

.footer-watermark-bottom {
    font-size: clamp(32px, 8.5vw, 120px);
    letter-spacing: 0.08em;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-lg) var(--space-md) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-copyright,
.footer-attribution {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
    margin: 0;
}

/* ===================================
   Responsive Styles
   =================================== */

/* Tablet */
@media (max-width: 1024px) {
    :root {
        --font-size-hero: 40px;
        --font-size-3xl: 32px;
    }

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

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

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

    .about-image {
        max-width: 600px;
        margin: 0 auto;
    }

    .about-image img {
        min-height: 300px;
    }
}

/* Touch devices - show images always (no hover available) */
@media (hover: none) {
    .card::before {
        opacity: 1;
    }

    .card::after {
        opacity: 1;
    }

    .card .card-icon {
        color: white;
    }

    .card .card-title {
        color: white;
    }

    .card .card-description {
        color: rgba(255, 255, 255, 0.95);
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --font-size-hero: 28px;
        --font-size-3xl: 28px;
        --font-size-2xl: 24px;
        --space-3xl: 64px;
    }

    .mobile-menu-btn {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background-color: var(--color-bg-white);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--space-lg);
        transition: right var(--transition-base);
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links a {
        font-size: var(--font-size-lg);
    }

    /* Reset scrolled nav colors for mobile menu (white background) */
    .header.scrolled .nav-links a {
        color: var(--color-text-primary);
    }

    .header.scrolled .nav-links a:hover {
        color: var(--color-accent);
    }

    .hero {
        min-height: calc(100vh - var(--header-height));
        padding: var(--space-xl) 0;
        padding-top: calc(var(--header-height) + var(--space-xl));
    }

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

    .hero-break-2 {
        display: block;  /* Show second break on mobile */
    }

    .hero-subtitle {
        font-size: var(--font-size-base);
    }

    .hero-nav-arrows {
        display: none;
    }

    .scroll-indicator {
        display: none;
    }

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

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

    /* Tech Stack mobile */
    .tech-stack-section {
        padding: var(--space-md) 0;
    }

    .tech-stack-track img {
        height: 32px;
    }

    .tech-stack-section::before,
    .tech-stack-section::after {
        width: 50px;
    }

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

    .contact {
        padding: var(--space-lg) 0;
    }

    .section-title {
        font-size: var(--font-size-2xl);
    }

    /* Footer mobile */
    .footer {
        padding: var(--space-xl) 0 var(--space-md);
    }

    .footer-brand {
        min-height: 140px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-xs);
        text-align: center;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    :root {
        --font-size-hero: 28px;
        --space-md: 16px;
    }

    .container {
        padding: 0 var(--space-sm);
    }

    .logo {
        font-size: var(--font-size-base);
    }
}

/* ===================================
   Animations
   =================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title,
.hero-subtitle {
    animation: fadeInUp 0.6s ease-out;
}

.hero-subtitle {
    animation-delay: 0.2s;
    animation-fill-mode: both;
}

/* Scroll animation classes */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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