/* ========================================
   CSS Variables / Design Tokens
   Variant 5: Refined Technical Sophistication
   ======================================== */
:root {
    /* Colors - Slate & Copper Palette */
    --color-background: #F8F7F4;
    --color-background-warm: #F3F1EC;
    --color-surface: #FFFFFF;
    --color-surface-elevated: #FFFFFF;

    --color-slate-950: #0C1017;
    --color-slate-900: #1A1F2C;
    --color-slate-800: #2D3444;
    --color-slate-700: #404859;
    --color-slate-600: #5A6478;
    --color-slate-500: #7A8599;
    --color-slate-400: #9CA5B4;
    --color-slate-300: #C4CAD4;
    --color-slate-200: #E2E5EB;
    --color-slate-100: #F1F3F6;

    --color-copper-600: #B87333;
    --color-copper-500: #D4894A;
    --color-copper-400: #E9A66B;
    --color-copper-300: #F5C99D;
    --color-copper-200: #FBE4C8;

    /* Accent colors for cards */
    --color-legal: #6366F1;
    --color-sales: #10B981;
    --color-ops: #F59E0B;
    --color-product: #EC4899;

    --color-text: var(--color-slate-900);
    --color-text-muted: var(--color-slate-600);
    --color-text-light: var(--color-slate-400);

    /* Typography */
    --font-display: 'DM Serif Display', Georgia, serif;
    --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    --spacing-4xl: 8rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 50px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(12, 16, 23, 0.04), 0 2px 4px rgba(12, 16, 23, 0.04);
    --shadow-md: 0 4px 8px rgba(12, 16, 23, 0.04), 0 8px 16px rgba(12, 16, 23, 0.06);
    --shadow-lg: 0 8px 16px rgba(12, 16, 23, 0.06), 0 16px 32px rgba(12, 16, 23, 0.08);
    --shadow-xl: 0 16px 32px rgba(12, 16, 23, 0.08), 0 32px 64px rgba(12, 16, 23, 0.12);
    --shadow-glow: 0 0 60px rgba(212, 137, 74, 0.15);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slower: 600ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

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

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

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input,
textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ========================================
   Grain Overlay
   ======================================== */
.grain-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    opacity: 0.4;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='paper'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.04' numOctaves='5' stitchTiles='stitch' result='noise'/%3E%3CfeDiffuseLighting in='noise' lighting-color='%23f5f3ef' surfaceScale='2'%3E%3CfeDistantLight azimuth='45' elevation='60'/%3E%3C/feDiffuseLighting%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23paper)'/%3E%3C/svg%3E");
}

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

/* ========================================
   Animations
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes navbarFadeIn {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.animate-in {
    opacity: 0;
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    animation-delay: calc(var(--delay, 0) * 0.1s);
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    width: calc(100% - var(--spacing-lg) * 2);
    max-width: 900px;
    animation: navbarFadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.1s both;
}

.navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: var(--spacing-sm) var(--spacing-sm) var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md), 0 0 0 1px rgba(12, 16, 23, 0.04);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    width: 28px;
    height: 28px;
    object-fit: contain;
}

.navbar-title {
    font-family: var(--font-body);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-slate-900);
    letter-spacing: -0.01em;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1rem 0.75rem 1.25rem;
    border-radius: var(--radius-full);
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 0.9375rem;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.btn:hover::before {
    opacity: 1;
}

.btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    transition: transform var(--transition-fast);
}

.btn:hover .btn-icon {
    transform: translateX(2px);
}

.btn-icon svg {
    width: 16px;
    height: 16px;
}

.btn-primary {
    background: var(--color-slate-900);
    color: white;
    box-shadow: var(--shadow-sm), 0 0 0 1px rgba(12, 16, 23, 0.1);
}

.btn-primary:hover {
    background: var(--color-slate-800);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md), 0 0 0 1px rgba(12, 16, 23, 0.1);
}

.btn-nav {
    padding: 0.625rem 0.75rem 0.625rem 1rem;
    text-align: center;
    justify-content: center;
}

.btn-hero {
    padding: 1rem 1.25rem 1rem 1.5rem;
    font-size: 1rem;
}

.btn-submit {
    background: linear-gradient(135deg, var(--color-copper-500) 0%, var(--color-copper-600) 100%);
    color: white;
    padding: 0.875rem 1rem 0.875rem 1.5rem;
    box-shadow: var(--shadow-sm), 0 0 0 1px rgba(184, 115, 51, 0.2);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(212, 137, 74, 0.3);
}

.btn-submit .btn-icon {
    background: rgba(255, 255, 255, 0.2);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    padding: calc(var(--spacing-4xl) + 60px) 0 var(--spacing-3xl);
    min-height: 90vh;
    display: flex;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero-text {
    max-width: 600px;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 3.75rem);
    font-weight: 400;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    color: var(--color-slate-900);
    letter-spacing: -0.02em;
}

.hero-title-emphasis {
    color: var(--color-copper-500);
    font-style: italic;
    font-weight: 500;
}

.hero-description {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.hero-description:last-of-type {
    margin-bottom: var(--spacing-xl);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero-image-glow {
    position: absolute;
    width: 120%;
    height: 120%;
    background: radial-gradient(ellipse at center, rgba(212, 137, 74, 0.12) 0%, transparent 70%);
    animation: float 6s ease-in-out infinite;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    max-height: 480px;
    object-fit: contain;
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 20px 40px rgba(12, 16, 23, 0.15));
}

/* ========================================
   Section Labels & Headers
   ======================================== */
.section-label {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-copper-500);
    margin-bottom: var(--spacing-sm);
    padding: 0.375rem 0.75rem;
    background: rgba(212, 137, 74, 0.1);
    border-radius: var(--radius-full);
}

.section-label-light {
    color: var(--color-copper-300);
    background: rgba(212, 137, 74, 0.15);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-2xl);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-slate-900);
    letter-spacing: -0.02em;
}

.section-description {
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--color-text-muted);
    margin-top: var(--spacing-md);
}

/* ========================================
   Services Section
   ======================================== */
.services {
    padding: var(--spacing-3xl) 0;
    background: var(--color-background-warm);
    position: relative;
    z-index: 1;
}

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

.service-card {
    position: relative;
    border-radius: var(--radius-lg);
    transition: transform var(--transition-base);
}

.service-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    padding: 2px;
    background: linear-gradient(135deg, transparent 0%, transparent 100%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.service-card[data-accent="legal"]::before {
    background: linear-gradient(135deg, var(--color-legal), transparent 60%);
}

.service-card[data-accent="sales"]::before {
    background: linear-gradient(135deg, var(--color-sales), transparent 60%);
}

.service-card[data-accent="ops"]::before {
    background: linear-gradient(135deg, var(--color-ops), transparent 60%);
}

.service-card[data-accent="product"]::before {
    background: linear-gradient(135deg, var(--color-product), transparent 60%);
}

.service-card:hover::before {
    opacity: 1;
}

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

.service-card-inner {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    height: 100%;
    display: grid;
    grid-row: span 3;
    grid-template-rows: subgrid;
    gap: var(--spacing-sm);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base);
}

.service-card:hover .service-card-inner {
    box-shadow: var(--shadow-lg);
}

.service-icon {
    width: 52px;
    height: 52px;
    margin: 0 auto var(--spacing-xs);
    padding: 10px;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.service-card[data-accent="legal"] .service-icon {
    color: var(--color-legal);
    background: rgba(99, 102, 241, 0.1);
}

.service-card[data-accent="sales"] .service-icon {
    color: var(--color-sales);
    background: rgba(16, 185, 129, 0.1);
}

.service-card[data-accent="ops"] .service-icon {
    color: var(--color-ops);
    background: rgba(245, 158, 11, 0.1);
}

.service-card[data-accent="product"] .service-icon {
    color: var(--color-product);
    background: rgba(236, 72, 153, 0.1);
}

.service-card:hover .service-icon {
    transform: scale(1.05);
}

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

.service-title {
    font-family: var(--font-body);
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--color-slate-900);
    line-height: 1.3;
    text-align: center;
}

.service-description {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--color-text-muted);
}

.service-content {
    display: flex;
    flex-direction: column;
}

.service-bullets {
    list-style: none;
    padding: 0;
    margin-top: var(--spacing-sm);
}

.service-bullets li {
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--color-text-muted);
    padding-left: 1.25rem;
    position: relative;
    margin-bottom: 0.5rem;
}

.service-bullets li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.5em;
    width: 5px;
    height: 5px;
    border-radius: 50%;
}

.service-card[data-accent="legal"] .service-bullets li::before {
    background: var(--color-legal);
}

.service-card[data-accent="sales"] .service-bullets li::before {
    background: var(--color-sales);
}

.service-card[data-accent="ops"] .service-bullets li::before {
    background: var(--color-ops);
}

.service-card[data-accent="product"] .service-bullets li::before {
    background: var(--color-product);
}

/* ========================================
   FAQ Section
   ======================================== */
.faq {
    padding: var(--spacing-3xl) 0;
    background: var(--color-background);
    position: relative;
    z-index: 1;
}

.faq-layout {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-2xl);
    align-items: start;
}

.faq-header {
    position: sticky;
    top: 120px;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.faq-item {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-slate-900);
    transition: background var(--transition-fast);
}

.faq-question:hover {
    background: var(--color-slate-100);
}

.faq-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    color: var(--color-copper-500);
    position: relative;
}

.faq-icon svg {
    width: 24px;
    height: 24px;
    position: absolute;
    top: 0;
    left: 0;
    transition: opacity var(--transition-base), transform var(--transition-base);
}

.faq-icon .icon-close {
    opacity: 0;
    transform: rotate(-90deg);
}

.faq-item.active .faq-icon .icon-plus {
    opacity: 0;
    transform: rotate(90deg);
}

.faq-item.active .faq-icon .icon-close {
    opacity: 1;
    transform: rotate(0);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.faq-answer p {
    padding: var(--spacing-lg) var(--spacing-lg);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-muted);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

/* ========================================
   Contact Section
   ======================================== */
.contact-area {
    position: relative;
    z-index: 2;
    isolation: isolate;
    background-color: var(--color-background);
}

.contact {
    position: relative;
    padding: var(--spacing-3xl) 0;
    margin: var(--spacing-2xl) var(--spacing-md);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.contact-background {
    position: absolute;
    inset: 0;
    background: linear-gradient(145deg, var(--color-slate-900) 0%, var(--color-slate-950) 100%);
    z-index: 0;
}

.contact .container {
    position: relative;
    z-index: 1;
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--spacing-2xl);
    align-items: start;
}

.contact-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 400;
    color: white;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-md);
}

.contact-description {
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--color-slate-400);
}

.contact-form-wrapper {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-slate-300);
}

.form-group input,
.form-group textarea {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-sm);
    padding: 0.875rem 1rem;
    color: white;
    transition: border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-slate-500);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-copper-500);
    background: rgba(0, 0, 0, 0.3);
    box-shadow: 0 0 0 3px rgba(212, 137, 74, 0.15);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    padding: var(--spacing-2xl) 0;
    background: transparent;
    position: relative;
    z-index: 1;
}

.footer-content {
    display: flex;
    justify-content: center;
}

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

/* ========================================
   Scroll Animations
   ======================================== */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Responsive Styles
   ======================================== */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .faq-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .faq-header {
        position: static;
        text-align: center;
    }

    .contact-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
    }

    .grain-overlay {
        opacity: 0.25;
    }

    .navbar {
        width: calc(100% - var(--spacing-md) * 2);
    }

    .navbar-title {
        font-size: 1rem;
    }

    .hero {
        padding-top: calc(var(--spacing-3xl) + 80px);
        min-height: auto;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .hero-text {
        text-align: center;
        max-width: 100%;
    }

    .hero-text .btn {
        margin: 0 auto;
    }

    .hero-image {
        order: -1;
    }

    .hero-image img {
        max-height: 280px;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .service-card-inner {
        padding: var(--spacing-md);
        display: flex;
        flex-direction: column;
        grid-row: auto;
        grid-template-rows: none;
    }

    .contact {
        margin: var(--spacing-lg) var(--spacing-sm);
        padding: var(--spacing-2xl) 0;
    }

    .contact-form-wrapper {
        padding: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    .navbar-content {
        padding: var(--spacing-xs) var(--spacing-xs) var(--spacing-xs) var(--spacing-sm);
    }

    .logo-icon {
        width: 24px;
        height: 24px;
    }

    .navbar-title {
        font-size: 0.875rem;
    }

    .btn-nav {
        padding: 0.5rem 0.625rem 0.5rem 0.875rem;
        font-size: 0.875rem;
        white-space: nowrap;
    }

    .btn-nav .btn-icon {
        width: 24px;
        height: 24px;
    }

    .faq-question {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9375rem;
    }

    .faq-answer p {
        padding: var(--spacing-md) var(--spacing-md);
    }
}

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

    .animate-in {
        opacity: 1;
        animation: none;
    }

    .hero-image-glow {
        animation: none;
    }
}