/* ==================== CSS Variables ==================== */
:root {
    --orange: #F15F2D;
    --orange-light: #FF8A5C;
    --accent: #DC2626;
    --accent-light: #EF4444;
    --black: #1F2937;
    --gray-dark: #374151;
    --gray: #6B7280;
    --gray-light: #E5E7EB;
    --white: #FFFFFF;

    --font-display: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;

    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

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

body {
    font-family: var(--font-display);
    background: var(--black);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* ==================== Grain Overlay ==================== */
.grain-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.03;
    pointer-events: none;
    z-index: 9999;
    mix-blend-mode: overlay;
}

/* ==================== Custom Cursor ==================== */
.cursor-dot {
    width: 8px;
    height: 8px;
    background: var(--orange);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 10000;
    transition: transform 0.15s ease, opacity 0.15s ease;
    opacity: 0;
}

@media (hover: hover) {
    body:hover .cursor-dot {
        opacity: 1;
    }
}

/* ==================== Navigation ==================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(31, 41, 55, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

.logo:hover {
    opacity: 0.8;
}

.logo-horizontal {
    height: 40px;
    width: auto;
    display: block;
}

.logo-symbol {
    height: 40px;
    width: auto;
    display: none;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 3rem;
    align-items: center;
}

.nav-links a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-links a:not(.nav-cta):hover {
    color: var(--orange);
}

.nav-links a:not(.nav-cta)::after {
    content: attr(data-text);
    position: absolute;
    left: 0;
    top: 0;
    color: var(--orange);
    overflow: hidden;
    width: 0;
    transition: width var(--transition-base);
}

.nav-links a:not(.nav-cta):hover::after {
    width: 100%;
}

.nav-cta {
    background: var(--orange);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    transition: all var(--transition-fast);
}

.nav-cta:hover {
    background: var(--orange-light);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(241, 95, 45, 0.3);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-toggle span {
    width: 28px;
    height: 2px;
    background: var(--white);
    transition: var(--transition-base);
}

/* ==================== Hero Section ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    padding: 8rem 2rem 4rem;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.code-rain {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    font-family: var(--font-mono);
    font-size: 3rem;
    color: var(--orange);
    opacity: 0.03;
}

.code-rain span {
    position: absolute;
    animation: fall 20s linear infinite;
}

.code-rain span:nth-child(1) { left: 10%; animation-delay: 0s; }
.code-rain span:nth-child(2) { left: 30%; animation-delay: 2s; }
.code-rain span:nth-child(3) { left: 50%; animation-delay: 4s; }
.code-rain span:nth-child(4) { left: 70%; animation-delay: 6s; }
.code-rain span:nth-child(5) { left: 90%; animation-delay: 8s; }

@keyframes fall {
    from { top: -10%; }
    to { top: 110%; }
}

.hero-content {
    max-width: 1400px;
    width: 100%;
    position: relative;
    z-index: 1;
    text-align: center;
}

.hero-label {
    margin-bottom: 2rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.2s;
}

.label-text {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.hero-title {
    font-size: clamp(3rem, 12vw, 8rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 2rem;
    letter-spacing: -0.03em;
}

.title-line {
    display: block;
    opacity: 0;
    transform: translateY(30px);
}

.title-line[data-scroll="fade-up"] {
    animation: fadeInUp 0.8s ease forwards;
}

.title-line:nth-child(1) { animation-delay: 0.3s; }
.title-line:nth-child(2) { animation-delay: 0.5s; }
.title-line:nth-child(3) { animation-delay: 0.7s; }

.title-line-accent {
    color: var(--white);
    position: relative;
    display: inline-block;
}

.title-line-accent::before {
    content: attr(data-text);
    position: absolute;
    left: 3px;
    top: 3px;
    color: var(--orange);
    z-index: -1;
}

.title-line-accent::after {
    content: '';
    position: absolute;
    bottom: 0.2em;
    left: 0;
    right: 0;
    height: 0.5em;
    background: var(--orange);
    opacity: 0.3;
    z-index: -1;
    transform: skewY(-2deg);
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    color: var(--gray-light);
    max-width: 700px;
    margin: 0 auto 3rem;
    line-height: 1.8;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.9s;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 1.1s;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--orange);
    color: var(--white);
    padding: 1.25rem 2.5rem;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(241, 95, 45, 0.4);
}

.btn-arrow {
    font-size: 1.5rem;
    transition: transform var(--transition-base);
}

.btn-primary:hover .btn-arrow {
    transform: translateX(5px);
}

.btn-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--white);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all var(--transition-base);
}

.btn-link:hover {
    color: var(--orange);
    gap: 1rem;
}

.hero-stats {
    display: flex;
    gap: 4rem;
    justify-content: center;
    margin-top: 6rem;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
    opacity: 0;
    transform: translateY(30px);
}

.stat-item[data-scroll="slide-up"] {
    animation: slideUp 0.8s ease forwards;
}

.stat-item:nth-child(1) { animation-delay: 1.3s; }
.stat-item:nth-child(2) { animation-delay: 1.5s; }
.stat-item:nth-child(3) { animation-delay: 1.7s; }

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--orange);
    line-height: 1;
    margin-bottom: 0.5rem;
    position: relative;
    text-shadow: 3px 3px 0 var(--accent);
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 0.95rem;
    color: var(--gray);
    font-weight: 500;
}

/* ==================== Services Section ==================== */
.services {
    padding: 8rem 2rem;
    background: var(--white);
    color: var(--black);
}

.services-header {
    max-width: 1400px;
    margin: 0 auto 4rem;
    text-align: center;
}

.section-label {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: 2px;
    display: block;
    margin-bottom: 1rem;
    opacity: 0;
}

.section-label[data-scroll="fade"] {
    animation: fadeIn 0.8s ease forwards;
}

.section-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.title-regular {
    color: var(--black);
}

.title-accent {
    color: var(--orange);
    position: relative;
    font-style: italic;
    letter-spacing: -0.03em;
}

.title-accent::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 6px;
    background: var(--accent);
    transform: translateX(-4px);
}

.services-grid {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--white);
    border: 2px solid var(--gray-light);
    border-radius: 20px;
    padding: 3rem 2rem;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: scale(0.9);
}

.service-card[data-scroll="scale"] {
    animation: scaleIn 0.6s ease forwards;
}

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }
.service-card:nth-child(4) { animation-delay: 0.4s; }

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--orange), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
    border-color: var(--orange);
}

.service-number {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--gray);
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.service-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 2rem;
    color: var(--orange);
    transition: all var(--transition-base);
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
    color: var(--accent);
}

.service-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--black);
}

.service-description {
    color: var(--gray-dark);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.service-tags span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    background: var(--gray-light);
    color: var(--gray-dark);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-weight: 600;
}

/* ==================== Work Section ==================== */
.work {
    padding: 8rem 2rem;
    background: var(--black);
}

.work-header {
    max-width: 1400px;
    margin: 0 auto 4rem;
    text-align: center;
}

.work-grid {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.work-item {
    background: var(--gray-dark);
    border-radius: 20px;
    overflow: hidden;
    transition: all var(--transition-base);
    opacity: 0;
    transform: translateY(40px);
}

.work-item[data-scroll="reveal"] {
    animation: revealUp 0.8s ease forwards;
}

.work-item:nth-child(1) { animation-delay: 0.1s; }
.work-item:nth-child(2) { animation-delay: 0.3s; }
.work-item:nth-child(3) { animation-delay: 0.5s; }

.work-item-large {
    grid-column: span 2;
}

.work-item:hover {
    transform: translateY(-10px);
}

.work-image {
    position: relative;
    height: 300px;
    overflow: hidden;
}

.work-overlay {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    transition: transform var(--transition-slow);
}

.work-item:hover .work-overlay {
    transform: scale(1.05);
}

.work-code {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    color: var(--white);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    background: rgba(0, 0, 0, 0.2);
    padding: 1.5rem;
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.code-comment {
    color: rgba(255, 255, 255, 0.7);
}

.code-keyword {
    font-weight: 700;
}

.code-string {
    color: rgba(255, 255, 255, 0.9);
}

.code-function {
    color: rgba(255, 255, 255, 0.9);
}

.work-content {
    padding: 2rem;
}

.work-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--white);
}

.work-description {
    color: var(--gray-light);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.work-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.work-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.work-tags span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-weight: 600;
}

.work-arrow {
    font-size: 2rem;
    color: var(--orange);
    transition: transform var(--transition-base);
}

.work-item:hover .work-arrow {
    transform: translateX(5px);
}

/* ==================== About Section ==================== */
.about {
    padding: 8rem 2rem;
    background: var(--white);
    color: var(--black);
}

.about-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}

.about-description {
    font-size: 1.15rem;
    line-height: 1.9;
    color: var(--gray-dark);
    margin-bottom: 1.5rem;
}

.about-principles {
    display: grid;
    gap: 2rem;
    margin-top: 3rem;
}

.principle-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.principle-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.principle-item h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--black);
}

.principle-item p {
    color: var(--gray);
    font-size: 0.95rem;
}

.code-block {
    background: var(--black);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    transform: scale(0.95);
    transition: transform var(--transition-slow);
}

.code-block[data-scroll="scale"] {
    animation: scaleInBounce 1s ease forwards;
}

.code-header {
    background: var(--gray-dark);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.code-dots::before {
    content: '●●●';
    letter-spacing: 4px;
    color: var(--orange);
    font-size: 0.75rem;
}

.code-title {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--gray-light);
}

.code-content {
    padding: 2rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.8;
    color: var(--white);
}

.code-content pre {
    margin: 0;
}

.code-keyword {
    color: var(--orange);
}

.code-class {
    color: var(--accent);
}

.code-function {
    color: var(--accent-light);
}

.code-string {
    color: #10B981;
}

/* ==================== Contact Section ==================== */
.contact {
    padding: 8rem 2rem;
    background: linear-gradient(135deg, var(--black) 0%, var(--gray-dark) 100%);
}

.contact-container {
    max-width: 1400px;
    margin: 0 auto;
}

.contact-header {
    text-align: center;
    margin-bottom: 4rem;
}

.contact-intro {
    font-size: 1.25rem;
    color: var(--gray-light);
    max-width: 600px;
    margin: 2rem auto 0;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.contact-icon {
    width: 56px;
    height: 56px;
    background: var(--orange);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all var(--transition-base);
}

.contact-item:hover .contact-icon {
    transform: scale(1.1) rotate(5deg);
    background: var(--accent);
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    color: var(--white);
}

.contact-label {
    font-size: 0.875rem;
    color: var(--gray);
    margin-bottom: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-link {
    color: var(--orange);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 600;
    transition: color var(--transition-fast);
}

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

.contact-value {
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 600;
}

.contact-form {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 3rem;
    backdrop-filter: blur(10px);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-field {
    margin-bottom: 1.5rem;
}

.form-field label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--white);
    font-size: 0.95rem;
}

.form-field input,
.form-field textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    color: var(--white);
    font-family: var(--font-display);
    font-size: 1rem;
    transition: all var(--transition-base);
}

.form-field input:focus,
.form-field textarea:focus {
    outline: none;
    border-color: var(--orange);
    background: rgba(255, 255, 255, 0.08);
}

.form-field textarea {
    resize: vertical;
    min-height: 150px;
}

/* ==================== Footer ==================== */
.footer {
    background: var(--black);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 4rem 2rem 2rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto 3rem;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
}

.logo-footer {
    margin-bottom: 1rem;
}

.logo-footer .logo-horizontal {
    height: 50px;
}

.footer-tagline {
    color: var(--gray);
    font-size: 0.95rem;
}

.footer-links {
    display: flex;
    gap: 4rem;
}

.footer-column h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--orange);
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: 0.75rem;
}

.footer-column a {
    color: var(--gray-light);
    text-decoration: none;
    transition: color var(--transition-fast);
    font-size: 0.95rem;
}

.footer-column a:hover {
    color: var(--orange);
}

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--gray);
    font-size: 0.875rem;
}

.footer-code {
    font-family: var(--font-mono);
    color: var(--gray);
}

/* ==================== Animations ==================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes scaleInBounce {
    0% {
        opacity: 0;
        transform: scale(0.8);
    }
    50% {
        transform: scale(1.02);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes revealUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==================== Responsive ==================== */
@media (max-width: 1024px) {
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .work-item-large {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    .logo-horizontal {
        display: none;
    }

    .logo-symbol {
        display: block;
    }

    .nav-links {
        display: none;
    }

    .mobile-toggle {
        display: flex;
    }

    .hero-title {
        font-size: clamp(2.5rem, 10vw, 5rem);
    }

    .section-title {
        font-size: clamp(2rem, 8vw, 3.5rem);
    }

    .hero-stats {
        gap: 2rem;
    }

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

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}