/* ========================================
   Angle Nine Associates - Stylesheet
   Color Scheme: Black, Grays, Sophisticated
   ======================================== */

/* CSS Variables */
:root {
    /* Core Colors */
    --color-black: #000000;
    --color-gray-950: #0a0a0a;
    --color-gray-900: #111111;
    --color-gray-850: #1a1a1a;
    --color-gray-800: #1f1f1f;
    --color-gray-700: #2a2a2a;
    --color-gray-600: #3d3d3d;
    --color-gray-500: #525252;
    --color-gray-400: #737373;
    --color-gray-300: #a3a3a3;
    --color-gray-200: #d4d4d4;
    --color-gray-100: #e5e5e5;
    --color-white: #ffffff;

    /* Accent - subtle silver/platinum */
    --color-accent: #c0c0c0;
    --color-accent-dim: #808080;

    /* Gradient */
    --gradient-text: linear-gradient(135deg, #ffffff 0%, #a3a3a3 50%, #ffffff 100%);
    --gradient-subtle: linear-gradient(180deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0) 100%);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Space Grotesk', sans-serif;

    /* Spacing */
    --section-padding: 120px;
    --container-max: 1280px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* 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-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray-300);
    background-color: var(--color-black);
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

ul {
    list-style: none;
}

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--color-white);
    line-height: 1.2;
}

.section-eyebrow {
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-gray-400);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(32px, 5vw, 48px);
    margin-bottom: 20px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--color-gray-400);
    max-width: 600px;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-header .section-subtitle {
    margin: 0 auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-family: var(--font-primary);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.02em;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-primary {
    background: var(--color-white);
    color: var(--color-black);
}

.btn-primary:hover {
    background: var(--color-gray-200);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--color-white);
    border: 1px solid var(--color-gray-600);
}

.btn-secondary:hover {
    border-color: var(--color-gray-400);
    background: var(--color-gray-900);
}

.btn-full {
    width: 100%;
}

/* ========================================
   Navigation
   ======================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-gray-850);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 20px;
    color: var(--color-white);
}

.logo-symbol {
    font-size: 24px;
    color: var(--color-accent);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-gray-300);
    transition: color var(--transition-fast);
}

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

.nav-cta {
    padding: 10px 20px;
    background: var(--color-gray-800);
    border-radius: 4px;
    border: 1px solid var(--color-gray-700);
}

.nav-cta:hover {
    background: var(--color-gray-700);
    border-color: var(--color-gray-600);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--color-white);
    transition: var(--transition-fast);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(80, 80, 80, 0.15), transparent);
}

.hero-content {
    position: relative;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    z-index: 2;
}

.hero-eyebrow {
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-gray-400);
    margin-bottom: 24px;
}

.hero-title {
    font-size: clamp(40px, 7vw, 72px);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    max-width: 800px;
}

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    line-height: 1.7;
    color: var(--color-gray-400);
    max-width: 540px;
    margin-bottom: 40px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 80px;
}

.hero-stats {
    display: flex;
    gap: 60px;
    padding-top: 40px;
    border-top: 1px solid var(--color-gray-800);
}

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

.stat-number {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 600;
    color: var(--color-white);
}

.stat-label {
    font-size: 13px;
    color: var(--color-gray-500);
}

.hero-visual {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    opacity: 0.4;
}

.grid-pattern {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--color-gray-800) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-gray-800) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 70% 70% at 70% 50%, black 0%, transparent 70%);
}

/* ========================================
   Services Section
   ======================================== */
.services {
    padding: var(--section-padding) 0;
    background: var(--color-gray-950);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.service-card {
    padding: 48px;
    background: var(--color-gray-900);
    border: 1px solid var(--color-gray-800);
    border-radius: 8px;
    transition: all var(--transition-base);
}

.service-card:hover {
    border-color: var(--color-gray-700);
    transform: translateY(-4px);
}

.service-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 24px;
    color: var(--color-accent);
}

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

.service-title {
    font-size: 22px;
    margin-bottom: 8px;
}

.service-tagline {
    font-size: 14px;
    font-style: italic;
    color: var(--color-gray-400);
    margin-bottom: 16px;
}

.service-description {
    font-size: 15px;
    color: var(--color-gray-400);
    margin-bottom: 24px;
    line-height: 1.7;
}

.service-capabilities {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.service-capabilities li {
    padding: 6px 12px;
    font-size: 12px;
    font-weight: 500;
    color: var(--color-gray-300);
    background: var(--color-gray-800);
    border-radius: 4px;
}

/* ========================================
   Projects Section
   ======================================== */
.projects {
    padding: var(--section-padding) 0;
    background: var(--color-black);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.project-card {
    position: relative;
    background: var(--color-gray-900);
    border: 1px solid var(--color-gray-800);
    border-radius: 8px;
    overflow: hidden;
    transition: all var(--transition-base);
}

.project-card:hover {
    border-color: var(--color-gray-700);
    transform: translateY(-4px);
}

.project-featured {
    grid-column: span 2;
    grid-row: span 2;
}

.project-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.project-featured .project-image {
    height: 300px;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent 0%, var(--color-gray-900) 100%);
}

.project-content {
    padding: 24px;
}

.project-featured .project-content {
    padding: 32px;
}

.project-category {
    display: inline-block;
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-accent);
    background: var(--color-gray-800);
    border-radius: 4px;
    margin-bottom: 12px;
}

.project-title {
    font-size: 18px;
    margin-bottom: 12px;
    line-height: 1.3;
}

.project-featured .project-title {
    font-size: 24px;
}

.project-description {
    font-size: 14px;
    color: var(--color-gray-400);
    line-height: 1.6;
    margin-bottom: 20px;
}

.project-metrics {
    display: flex;
    gap: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--color-gray-800);
}

.metric {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.metric-value {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 600;
    color: var(--color-white);
}

.metric-label {
    font-size: 11px;
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ========================================
   About Section
   ======================================== */
.about {
    padding: var(--section-padding) 0;
    background: var(--color-gray-950);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-content .section-title {
    margin-bottom: 32px;
}

.about-text {
    font-size: 16px;
    color: var(--color-gray-400);
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-values {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
    padding-top: 48px;
    border-top: 1px solid var(--color-gray-800);
}

.value h4 {
    font-size: 16px;
    margin-bottom: 8px;
}

.value p {
    font-size: 13px;
    color: var(--color-gray-500);
    line-height: 1.6;
}

.about-visual {
    position: relative;
}

.about-image-container {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
}

.about-image-container img {
    width: 100%;
    height: 500px;
    object-fit: cover;
}

.about-image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0,0,0,0.3) 0%, transparent 50%);
}

.about-badge {
    position: absolute;
    bottom: -30px;
    left: -30px;
    width: 120px;
    height: 120px;
    background: var(--color-gray-900);
    border: 1px solid var(--color-gray-700);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.badge-number {
    font-family: var(--font-display);
    font-size: 48px;
    font-weight: 700;
    color: var(--color-white);
    line-height: 1;
}

.badge-text {
    font-size: 11px;
    color: var(--color-gray-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ========================================
   Contact Section
   ======================================== */
.contact {
    padding: var(--section-padding) 0;
    background: var(--color-black);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

.contact-content .section-title {
    margin-bottom: 24px;
}

.contact-text {
    font-size: 16px;
    color: var(--color-gray-400);
    margin-bottom: 48px;
    line-height: 1.7;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

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

.contact-label {
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-gray-500);
}

.contact-item a,
.contact-item span {
    font-size: 16px;
    color: var(--color-white);
}

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

.contact-form-container {
    background: var(--color-gray-900);
    border: 1px solid var(--color-gray-800);
    border-radius: 8px;
    padding: 48px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-gray-300);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 14px 16px;
    font-family: var(--font-primary);
    font-size: 15px;
    color: var(--color-white);
    background: var(--color-gray-800);
    border: 1px solid var(--color-gray-700);
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-gray-500);
    background: var(--color-gray-850);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23737373' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

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

/* ========================================
   Footer
   ======================================== */
.footer {
    padding: 80px 0 40px;
    background: var(--color-gray-950);
    border-top: 1px solid var(--color-gray-900);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 80px;
    margin-bottom: 60px;
}

.footer-tagline {
    font-size: 14px;
    color: var(--color-gray-500);
    margin-top: 16px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-gray-300);
    margin-bottom: 20px;
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-column a {
    font-size: 14px;
    color: var(--color-gray-500);
}

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

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid var(--color-gray-800);
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--color-gray-600);
}

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

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

    .project-featured {
        grid-column: span 2;
        grid-row: span 1;
    }

    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .about-visual {
        order: -1;
    }

    .about-values {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 80px;
    }

    .nav-links {
        display: none;
    }

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

    .hero {
        min-height: auto;
        padding: 140px 0 80px;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }

    .hero-visual {
        display: none;
    }

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

    .project-featured {
        grid-column: span 1;
    }

    .service-card {
        padding: 32px;
    }

    .contact-form-container {
        padding: 32px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .footer-links {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .footer-links {
        grid-template-columns: 1fr;
    }

    .about-badge {
        width: 100px;
        height: 100px;
        bottom: -20px;
        left: -10px;
    }

    .badge-number {
        font-size: 36px;
    }
}

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

.hero-content > * {
    animation: fadeInUp 0.8s ease forwards;
}

.hero-eyebrow { animation-delay: 0.1s; }
.hero-title { animation-delay: 0.2s; }
.hero-subtitle { animation-delay: 0.3s; }
.hero-cta { animation-delay: 0.4s; }
.hero-stats { animation-delay: 0.5s; }