/* ========================================
   DOLIOLUM — Swiss Minimalist Design System
   ======================================== */

/* --- CSS Custom Properties --- */
:root {
    /* Colors - Light Mode */
    --color-bg: #FAFAF9;
    --color-bg-alt: #F5F5F4;
    --color-bg-dark: #1A1A1A;
    --color-text: #1A1A1A;
    --color-text-secondary: #6B6B6B;
    --color-text-tertiary: #9A9A9A;
    --color-text-inverse: #FAFAF9;
    --color-accent: #8B7355;
    --color-border: #E5E5E3;
    --color-border-dark: #2A2A2A;
    --nav-bg: rgba(250, 250, 249, 0.95);

    /* Typography */
    --font-serif: 'Playfair Display', Georgia, serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 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 */
    --container-max: 1200px;
    --container-narrow: 800px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Dark Mode --- */
[data-theme="dark"] {
    --color-bg: #0D0D0D;
    --color-bg-alt: #151515;
    --color-bg-dark: #000000;
    --color-text: #FAFAF9;
    --color-text-secondary: #A0A0A0;
    --color-text-tertiary: #6B6B6B;
    --color-text-inverse: #0D0D0D;
    --color-accent: #C4A47C;
    --color-border: #2A2A2A;
    --color-border-dark: #1A1A1A;
    --nav-bg: rgba(13, 13, 13, 0.95);
}

/* --- Noise Texture --- */
.noise {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9998;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-repeat: repeat;
}

[data-theme="dark"] .noise {
    opacity: 0.04;
}

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

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

body {
    font-family: var(--font-sans);
    font-weight: 300;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
    transition: background-color var(--transition-base), color var(--transition-base);
}

/* Smooth transitions for theme change */
body *, body *::before, body *::after {
    transition: background-color var(--transition-base), border-color var(--transition-base), color var(--transition-fast);
}

body.loading {
    overflow: hidden;
}

/* ========================================
   LOADER
   ======================================== */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-logo {
    width: 60px;
    height: 60px;
    color: var(--color-text);
}

.loader-circle {
    stroke-dasharray: 176;
    stroke-dashoffset: 176;
    animation: loaderCircle 1.5s ease forwards;
}

.loader-d {
    stroke-dasharray: 80;
    stroke-dashoffset: 80;
    animation: loaderD 1s ease 0.5s forwards;
}

.loader-line {
    stroke-dasharray: 12;
    stroke-dashoffset: 12;
    animation: loaderLine 0.5s ease 1s forwards;
}

@keyframes loaderCircle {
    to { stroke-dashoffset: 0; }
}

@keyframes loaderD {
    to { stroke-dashoffset: 0; }
}

@keyframes loaderLine {
    to { stroke-dashoffset: 0; }
}

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

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

/* --- Typography --- */
h1, h2, h3, h4 {
    font-family: var(--font-serif);
    font-weight: 400;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

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

/* --- Animations --- */
.animate-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

/* Stagger children */
.animate-in:nth-child(1) { transition-delay: 0s; }
.animate-in:nth-child(2) { transition-delay: 0.1s; }
.animate-in:nth-child(3) { transition-delay: 0.2s; }
.animate-in:nth-child(4) { transition-delay: 0.3s; }
.animate-in:nth-child(5) { transition-delay: 0.4s; }

/* ========================================
   NAVIGATION
   ======================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: var(--space-md) 0;
    background: transparent;
    transition: background var(--transition-base), padding var(--transition-base);
}

.nav.scrolled {
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--color-border);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-mark {
    width: 36px;
    height: 36px;
    transition: transform var(--transition-base);
}

.logo:hover .logo-mark {
    transform: rotate(10deg);
}

.logo-text {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 500;
    letter-spacing: -0.02em;
}

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

.nav-links a {
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: 0.02em;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

.nav-cta {
    padding: 0.75rem 1.5rem;
    background: var(--color-text);
    color: var(--color-text-inverse) !important;
    border-radius: 2px;
    transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base) !important;
    position: relative;
    overflow: hidden;
}

.nav-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
    z-index: -1;
}

.nav-cta:hover {
    background: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(139, 115, 85, 0.2);
}

.nav-cta:hover::before {
    transform: scaleX(1);
}

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    cursor: pointer;
    color: var(--color-text);
    transition: border-color var(--transition-fast), background var(--transition-fast);
}

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

.theme-toggle svg {
    width: 18px;
    height: 18px;
}

.theme-icon-dark {
    display: none;
}

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

[data-theme="dark"] .theme-icon-dark {
    display: block;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 1.5px;
    background: var(--color-text);
    transition: var(--transition-fast);
}

/* ========================================
   HERO
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--space-3xl) var(--space-lg);
    position: relative;
    overflow: hidden;
}

/* Hero Background with Ken Burns Effect */
.hero-bg-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    overflow: hidden;
}

.hero-bg {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    animation: kenBurns 25s ease-in-out infinite alternate;
    will-change: transform;
}

@keyframes kenBurns {
    0% {
        transform: scale(1) translateY(0);
    }
    100% {
        transform: scale(1.15) translateY(-2%);
    }
}

.hero-bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg);
    opacity: 0.7;
}

[data-theme="dark"] .hero-bg-overlay {
    opacity: 0.85;
}

/* Ensure hero text is readable over background */
.hero .hero-title {
    color: var(--color-text);
}

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

.hero .hero-subtitle {
    color: var(--color-text-secondary);
}

.hero .stat-number {
    color: var(--color-text);
}

.hero .stat-label {
    color: var(--color-text-secondary);
}

.hero .stat-divider {
    background: var(--color-text-tertiary);
}

.hero .hero-scroll span {
    color: var(--color-text-secondary);
}

.hero .scroll-line {
    background: var(--color-text-tertiary);
}

.hero-gradient {
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(
        ellipse at center,
        rgba(139, 115, 85, 0.08) 0%,
        rgba(139, 115, 85, 0.03) 40%,
        transparent 70%
    );
    pointer-events: none;
    z-index: 0;
}

.hero-content {
    max-width: var(--container-narrow);
    position: relative;
    z-index: 1;
}

.hero-eyebrow {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.hero-title {
    font-size: clamp(3rem, 8vw, 5.5rem);
    margin-bottom: var(--space-lg);
    line-height: 1.05;
}

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

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 540px;
    margin-bottom: var(--space-xl);
}

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

.stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-number {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-tertiary);
}

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

.hero-scroll {
    position: absolute;
    bottom: var(--space-xl);
    left: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.hero-scroll span {
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-tertiary);
}

.scroll-line {
    width: 60px;
    height: 1px;
    background: var(--color-border);
    position: relative;
    overflow: hidden;
}

.scroll-line::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 30px;
    height: 100%;
    background: var(--color-accent);
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(200%); }
}

/* ========================================
   ABOUT — PICTET STYLE
   ======================================== */
.about {
    padding: var(--space-3xl) 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-3xl);
}

.about-title h2 {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 400;
    color: var(--color-accent);
    position: sticky;
    top: 120px;
}

.about-lead {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: var(--space-2xl);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--color-border);
    border: 1px solid var(--color-border);
}

.about-stat {
    background: var(--color-bg);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
}

.about-stat-number {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 400;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 0.25rem;
}

.about-stat-unit {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.about-stat-label {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
    margin-top: auto;
}

/* ========================================
   SECTIONS — SHARED
   ======================================== */
section {
    padding: var(--space-3xl) 0;
}

.section-header {
    max-width: var(--container-narrow);
    margin-bottom: var(--space-2xl);
}

.section-eyebrow {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 600px;
}

/* ========================================
   SERVICES
   ======================================== */
.services {
    background: var(--color-bg);
}

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

.service-card {
    padding: var(--space-xl) var(--space-lg);
    border: 1px solid var(--color-border);
    transition: border-color var(--transition-base), transform var(--transition-base);
}

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

.service-number {
    font-family: var(--font-serif);
    font-size: 3rem;
    color: var(--color-border);
    line-height: 1;
    margin-bottom: var(--space-lg);
    display: block;
    transition: color var(--transition-base);
}

.service-card:hover .service-number {
    color: var(--color-accent);
}

.service-title {
    font-size: 1.375rem;
    margin-bottom: var(--space-sm);
}

.service-desc {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* ========================================
   PORTFOLIO
   ======================================== */
.portfolio {
    background: var(--color-bg-dark);
    color: var(--color-text-inverse);
}

.portfolio .section-eyebrow {
    color: var(--color-accent);
}

.portfolio .section-subtitle {
    color: var(--color-text-tertiary);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--color-border-dark);
}

.portfolio-card {
    background: var(--color-bg-dark);
    transition: background var(--transition-base);
}

.portfolio-card:hover {
    background: #222;
}

.portfolio-card-inner {
    padding: var(--space-xl);
    position: relative;
}

.portfolio-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-md);
    color: var(--color-accent);
    opacity: 0.6;
    transition: opacity var(--transition-base), transform var(--transition-base);
}

.portfolio-icon svg {
    width: 100%;
    height: 100%;
}

.portfolio-card:hover .portfolio-icon {
    opacity: 1;
    transform: scale(1.1);
}

.portfolio-name {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
    color: var(--color-text-inverse);
}

.portfolio-desc {
    font-size: 0.9375rem;
    color: var(--color-text-tertiary);
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

.portfolio-sector {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-accent);
}

/* Last card spans full width if odd number */
.portfolio-card:last-child:nth-child(odd) {
    grid-column: 1 / -1;
}

/* Dark mode portfolio adjustments */
[data-theme="dark"] .portfolio {
    background: #000000;
}

[data-theme="dark"] .portfolio-card {
    background: #000000;
}

[data-theme="dark"] .portfolio-card:hover {
    background: #0A0A0A;
}

[data-theme="dark"] .portfolio-name {
    color: #FAFAF9;
}

[data-theme="dark"] .portfolio .section-title,
[data-theme="dark"] .portfolio .section-title .word-inner {
    color: #FAFAF9;
}

/* ========================================
   DISTINCTION
   ======================================== */
.distinction {
    background: var(--color-bg-alt);
}

.pillars {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1px;
    background: var(--color-border);
}

.pillar {
    background: var(--color-bg-alt);
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
    transition: background var(--transition-base);
}

.pillar:hover {
    background: var(--color-bg);
}

.pillar-number {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.pillar-title {
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
}

.pillar-desc {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ========================================
   CONTACT
   ======================================== */
.contact {
    background: var(--color-bg);
    padding: var(--space-3xl) 0;
}

.contact-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.contact-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    margin-bottom: var(--space-md);
}

.contact-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 480px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.contact-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.contact-label {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-tertiary);
}

.contact-value {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    transition: color var(--transition-fast);
}

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

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: var(--color-bg-dark);
    padding: var(--space-lg) 0;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-serif);
    font-size: 1.25rem;
    color: var(--color-text-inverse);
}

.footer-logo .logo-mark {
    width: 28px;
    height: 28px;
}

.footer-copy {
    font-size: 0.8125rem;
    color: var(--color-text-tertiary);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1024px) {
    .pillars {
        grid-template-columns: repeat(3, 1fr);
    }

    .pillar:nth-child(4),
    .pillar:nth-child(5) {
        grid-column: span 1;
    }

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

@media (max-width: 900px) {
    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

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

    .contact-inner {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .about-title h2 {
        position: static;
    }
}

@media (max-width: 768px) {
    :root {
        --space-lg: 1.5rem;
        --space-xl: 3rem;
        --space-2xl: 4rem;
        --space-3xl: 6rem;
    }

    .nav-links {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-bg);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--space-lg);
        z-index: 100;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        font-size: 1.5rem;
        color: var(--color-text);
    }

    .nav-links .nav-cta {
        margin-top: var(--space-md);
    }

    .nav-links .theme-toggle {
        position: absolute;
        bottom: var(--space-xl);
    }

    .nav-toggle {
        display: flex;
        z-index: 101;
    }

    .nav-toggle.active span:first-child {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:last-child {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .pillars {
        grid-template-columns: 1fr;
        gap: 0;
        background: transparent;
    }

    .pillar {
        border-bottom: 1px solid var(--color-border);
        text-align: left;
        display: grid;
        grid-template-columns: auto 1fr;
        gap: var(--space-md);
        align-items: start;
    }

    .pillar-number {
        margin-bottom: 0;
    }

    .pillar-title {
        grid-column: 2;
        margin-bottom: 4px;
    }

    .pillar-desc {
        grid-column: 2;
    }

    .hero-stats {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-md);
    }

    .stat-divider {
        display: none;
    }

    .stat {
        flex-direction: row;
        align-items: baseline;
        gap: var(--space-sm);
    }

    .hero-scroll {
        display: none;
    }

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

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

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

    .about-stat-number {
        font-size: 2.5rem;
    }

    .service-card {
        padding: var(--space-lg);
    }

    .portfolio-card-inner {
        padding: var(--space-lg);
    }
}