/* ==========================================================================
   Dot F Studio — Styles
   Aesthetic: Editorial Japanese Minimalism meets Modern Tech
   ========================================================================== */

/* CSS Variables */
:root {
    /* Colors */
    --color-bg: #0a0a0b;
    --color-bg-elevated: #111113;
    --color-bg-subtle: #18181b;
    --color-surface: #1c1c1f;
    --color-border: #27272a;
    --color-border-subtle: #1f1f23;

    --color-text: #fafafa;
    --color-text-secondary: #a1a1aa;
    --color-text-muted: #71717a;

    --color-accent: #22d3ee;
    --color-accent-dim: rgba(34, 211, 238, 0.15);
    --color-accent-glow: rgba(34, 211, 238, 0.4);

    /* Typography */
    --font-display: 'Syne', sans-serif;
    --font-body: 'DM Sans', sans-serif;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
    --space-3xl: 10rem;

    /* Layout */
    --max-width: 1200px;
    --gutter: clamp(1.5rem, 5vw, 4rem);

    /* Animation */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
    --duration-fast: 150ms;
    --duration-normal: 300ms;
    --duration-slow: 500ms;
}

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

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

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

/* Cursor Glow */
.cursor-glow {
    position: fixed;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
    pointer-events: none;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 0;
    mix-blend-mode: screen;
}

body:hover .cursor-glow {
    opacity: 0.3;
}

/* Selection */
::selection {
    background: var(--color-accent);
    color: var(--color-bg);
}

/* Links */
a {
    color: inherit;
    text-decoration: none;
}

/* Lists */
ul, ol {
    list-style: none;
}

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

/* ==========================================================================
   Navigation
   ========================================================================== */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: var(--space-md) var(--gutter);
    background: linear-gradient(to bottom, var(--color-bg) 0%, transparent 100%);
}

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    display: flex;
    align-items: baseline;
}

.logo-dot {
    color: var(--color-accent);
    font-size: 2em;
    line-height: 0.5;
    margin-right: 0.05em;
}

.nav-cta {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--color-border);
    border-radius: 2rem;
    transition: all var(--duration-normal) var(--ease-out-expo);
}

.nav-cta:hover {
    background: var(--color-text);
    color: var(--color-bg);
    border-color: var(--color-text);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: var(--space-xl);
    padding: var(--space-3xl) var(--gutter) var(--space-2xl);
    max-width: calc(var(--max-width) + var(--gutter) * 2);
    margin: 0 auto;
    position: relative;
}

.hero-content {
    z-index: 1;
}

.hero-label {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
    opacity: 0;
    animation: fadeSlideUp 0.8s var(--ease-out-expo) 0.2s forwards;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3.5rem, 10vw, 7rem);
    font-weight: 800;
    line-height: 0.95;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-md);
}

.title-line {
    display: block;
    opacity: 0;
    animation: fadeSlideUp 0.8s var(--ease-out-expo) forwards;
}

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

.title-line:nth-child(2) {
    animation-delay: 0.4s;
    color: var(--color-text-secondary);
}

.hero-tagline {
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 500;
    color: var(--color-accent);
    margin-bottom: var(--space-lg);
    opacity: 0;
    animation: fadeSlideUp 0.8s var(--ease-out-expo) 0.5s forwards;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 480px;
    margin-bottom: var(--space-xl);
    opacity: 0;
    animation: fadeSlideUp 0.8s var(--ease-out-expo) 0.6s forwards;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    padding: 1rem 2rem;
    background: var(--color-accent);
    color: var(--color-bg);
    border-radius: 2rem;
    transition: all var(--duration-normal) var(--ease-out-expo);
    opacity: 0;
    animation: fadeSlideUp 0.8s var(--ease-out-expo) 0.7s forwards;
}

.hero-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 40px var(--color-accent-glow);
}

.hero-cta svg {
    transition: transform var(--duration-normal) var(--ease-out-expo);
}

.hero-cta:hover svg {
    transform: translate(3px, -3px);
}

/* Hero Visual */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    animation: fadeIn 1s var(--ease-out-expo) 0.8s forwards;
}

.hero-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    width: 100%;
    max-width: 320px;
    aspect-ratio: 1;
}

.grid-item {
    background: var(--color-surface);
    border-radius: 0.5rem;
    border: 1px solid var(--color-border-subtle);
    opacity: 0;
    animation: gridPop 0.6s var(--ease-out-expo) calc(0.9s + var(--delay) * 0.08s) forwards;
    transition: all var(--duration-normal) var(--ease-out-expo);
}

.grid-item:hover {
    transform: scale(1.05);
    border-color: var(--color-border);
}

.grid-item.accent {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

.grid-item.accent:hover {
    box-shadow: 0 0 30px var(--color-accent-glow);
}

/* ==========================================================================
   Section Common Styles
   ========================================================================== */

section {
    padding: var(--space-3xl) var(--gutter);
    max-width: calc(var(--max-width) + var(--gutter) * 2);
    margin: 0 auto;
}

.section-header {
    margin-bottom: var(--space-xl);
    display: flex;
    align-items: baseline;
    gap: var(--space-md);
}

.section-number {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-accent);
    letter-spacing: 0.1em;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* ==========================================================================
   Services Section
   ========================================================================== */

.services {
    border-top: 1px solid var(--color-border-subtle);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.service-card {
    padding: var(--space-lg);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border-subtle);
    border-radius: 1rem;
    transition: all var(--duration-normal) var(--ease-out-expo);
}

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

.service-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-dim);
    border-radius: 0.75rem;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.service-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.service-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.service-list li {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    padding-left: 1.25rem;
    position: relative;
}

.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6em;
    width: 6px;
    height: 1px;
    background: var(--color-accent);
}

/* ==========================================================================
   Approach Section
   ========================================================================== */

.approach {
    border-top: 1px solid var(--color-border-subtle);
}

.approach-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.approach-item {
    position: relative;
}

.approach-marker {
    width: 12px;
    height: 12px;
    background: var(--color-accent);
    border-radius: 50%;
    margin-bottom: var(--space-md);
    position: relative;
}

.approach-marker::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 24px;
    height: 24px;
    background: var(--color-accent-dim);
    border-radius: 50%;
    z-index: -1;
}

.approach-title {
    font-family: var(--font-display);
    font-size: 1.375rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.approach-text {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ==========================================================================
   Team Section
   ========================================================================== */

.team {
    border-top: 1px solid var(--color-border-subtle);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--space-lg);
}

.team-member {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border-subtle);
    border-radius: 1rem;
    transition: all var(--duration-normal) var(--ease-out-expo);
}

.team-member:hover {
    border-color: var(--color-border);
}

.member-avatar {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dim) 100%);
    border-radius: 1rem;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-bg);
}

.member-info {
    flex: 1;
}

.member-name {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.member-role {
    font-size: 0.875rem;
    color: var(--color-accent);
    font-weight: 500;
    margin-bottom: var(--space-sm);
}

.member-bio {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ==========================================================================
   Process Section
   ========================================================================== */

.process {
    border-top: 1px solid var(--color-border-subtle);
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-lg);
    position: relative;
}

.process-step {
    display: flex;
    gap: var(--space-md);
}

.step-number {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-accent);
    background: var(--color-accent-dim);
    border-radius: 50%;
}

.step-content {
    padding-top: 0.5rem;
}

.step-title {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.step-text {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */

.contact {
    border-top: 1px solid var(--color-border-subtle);
    padding: var(--space-3xl) var(--gutter);
    background: var(--color-bg-elevated);
    max-width: 100%;
    margin: 0;
}

.contact-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    text-align: center;
}

.contact-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-sm);
}

.contact-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
}

.contact-email {
    display: inline-block;
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 4vw, 2rem);
    font-weight: 600;
    color: var(--color-accent);
    padding: var(--space-md) var(--space-lg);
    border: 2px solid var(--color-accent);
    border-radius: 3rem;
    margin-bottom: var(--space-xl);
    transition: all var(--duration-normal) var(--ease-out-expo);
}

.contact-email:hover {
    background: var(--color-accent);
    color: var(--color-bg);
    box-shadow: 0 10px 40px var(--color-accent-glow);
}

.contact-meta {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
    padding: var(--space-lg) var(--gutter);
    border-top: 1px solid var(--color-border-subtle);
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.footer-brand {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1rem;
}

.footer-copy {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* ==========================================================================
   Animations
   ========================================================================== */

@keyframes fadeSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes gridPop {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Scroll Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

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

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

@media (max-width: 900px) {
    .hero {
        grid-template-columns: 1fr;
        min-height: auto;
        padding-top: 8rem;
        padding-bottom: var(--space-xl);
    }

    .hero-visual {
        order: -1;
        margin-bottom: var(--space-lg);
    }

    .hero-grid {
        max-width: 200px;
    }

    .hero-description br {
        display: none;
    }
}

@media (max-width: 600px) {
    :root {
        --space-3xl: 5rem;
    }

    .nav {
        padding: var(--space-sm) var(--gutter);
    }

    .section-header {
        flex-direction: column;
        gap: var(--space-xs);
    }

    .team-member {
        flex-direction: column;
        align-items: flex-start;
    }

    .footer-inner {
        flex-direction: column;
        text-align: center;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}