/* ========================================
   Angle Three Associates - Stylesheet
   Light/Newspaper aesthetic
   ======================================== */

/* CSS Variables */
:root {
    /* Core Colors — inverted from dark theme */
    --color-white: #ffffff;
    --color-gray-50: #fafafa;
    --color-gray-100: #f5f5f5;
    --color-gray-150: #eeeeee;
    --color-gray-200: #e5e5e5;
    --color-gray-300: #d4d4d4;
    --color-gray-400: #a3a3a3;
    --color-gray-500: #737373;
    --color-gray-600: #525252;
    --color-gray-700: #404040;
    --color-gray-800: #262626;
    --color-gray-900: #171717;
    --color-black: #0a0a0a;

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

    /* Spacing */
    --section-padding: 120px;
    --container-max: 1080px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s 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: 1.7;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    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-black);
    line-height: 1.2;
}

.section-eyebrow {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-gray-500);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(28px, 4vw, 42px);
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 17px;
    color: var(--color-gray-600);
    max-width: 560px;
    line-height: 1.7;
}

.section-header {
    text-align: center;
    margin-bottom: 72px;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 13px 28px;
    font-family: var(--font-primary);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.01em;
    border-radius: 3px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
}

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

.btn-primary:hover {
    background: var(--color-gray-800);
    transform: translateY(-1px);
}

.btn-secondary {
    background: transparent;
    color: var(--color-black);
    border: 1px solid var(--color-gray-300);
}

.btn-secondary:hover {
    border-color: var(--color-black);
    background: var(--color-gray-50);
}

.btn-full {
    width: 100%;
}

/* ========================================
   Navigation
   ======================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-gray-200);
}

.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: 10px;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 18px;
    color: var(--color-black);
}

.logo-symbol {
    font-size: 22px;
    color: var(--color-gray-500);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 36px;
}

.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-gray-600);
    transition: color var(--transition-fast);
}

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

.nav-cta {
    padding: 8px 18px;
    background: var(--color-gray-100);
    border-radius: 3px;
    border: 1px solid var(--color-gray-200);
}

.nav-cta:hover {
    background: var(--color-gray-200);
    border-color: var(--color-gray-300);
}

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

.mobile-menu-btn span {
    width: 22px;
    height: 1.5px;
    background: var(--color-black);
    transition: var(--transition-fast);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    background: var(--color-white);
}

.hero-rule {
    position: absolute;
    top: 50%;
    right: 0;
    width: 40%;
    height: 1px;
    background: var(--color-gray-200);
}

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

.hero-eyebrow {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-gray-500);
    margin-bottom: 24px;
}

.hero-title {
    font-size: clamp(36px, 6vw, 64px);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    max-width: 700px;
    letter-spacing: -0.03em;
    color: var(--color-black);
}

.hero-subtitle {
    font-size: 18px;
    line-height: 1.7;
    color: var(--color-gray-600);
    max-width: 500px;
    margin-bottom: 40px;
}

.hero-cta {
    display: flex;
    gap: 14px;
    margin-bottom: 80px;
}

.hero-stats {
    display: flex;
    gap: 56px;
    padding-top: 40px;
    border-top: 1px solid var(--color-gray-200);
}

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

.stat-number {
    font-family: var(--font-display);
    font-size: 30px;
    font-weight: 600;
    color: var(--color-black);
}

.stat-label {
    font-size: 12px;
    color: var(--color-gray-500);
    letter-spacing: 0.02em;
}

/* ========================================
   Practices Section
   ======================================== */
.practices {
    padding: var(--section-padding) 0;
    background: var(--color-gray-50);
    border-top: 1px solid var(--color-gray-200);
    border-bottom: 1px solid var(--color-gray-200);
}

.practices-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--color-gray-200);
    border: 1px solid var(--color-gray-200);
}

.practice-card {
    padding: 44px;
    background: var(--color-white);
    transition: all var(--transition-base);
}

.practice-card:hover {
    background: var(--color-gray-50);
}

.practice-number {
    font-family: var(--font-display);
    font-size: 12px;
    font-weight: 600;
    color: var(--color-gray-400);
    letter-spacing: 0.05em;
    display: block;
    margin-bottom: 20px;
}

.practice-title {
    font-size: 20px;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.practice-description {
    font-size: 15px;
    color: var(--color-gray-600);
    margin-bottom: 24px;
    line-height: 1.7;
}

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

.practice-capabilities li {
    padding: 5px 12px;
    font-size: 12px;
    font-weight: 500;
    color: var(--color-gray-700);
    background: var(--color-gray-100);
    border: 1px solid var(--color-gray-200);
    border-radius: 3px;
}

/* ========================================
   Work / Case Studies Section
   ======================================== */
.work {
    padding: var(--section-padding) 0;
    background: var(--color-white);
}

.work-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--color-gray-200);
    border: 1px solid var(--color-gray-200);
}

.case-card {
    background: var(--color-white);
    transition: all var(--transition-base);
}

.case-card:hover {
    background: var(--color-gray-50);
}

.case-featured {
    grid-column: span 2;
}

.case-content {
    padding: 36px;
}

.case-category {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-gray-500);
    margin-bottom: 14px;
}

.case-title {
    font-size: 18px;
    margin-bottom: 12px;
    line-height: 1.3;
    letter-spacing: -0.01em;
}

.case-featured .case-title {
    font-size: 22px;
}

.case-description {
    font-size: 14px;
    color: var(--color-gray-600);
    line-height: 1.7;
    margin-bottom: 24px;
}

.case-metrics {
    display: flex;
    gap: 28px;
    padding-top: 16px;
    border-top: 1px solid var(--color-gray-200);
}

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

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

.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-50);
    border-top: 1px solid var(--color-gray-200);
    border-bottom: 1px solid var(--color-gray-200);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.4fr 0.6fr;
    gap: 80px;
    align-items: start;
}

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

.about-text {
    font-size: 16px;
    color: var(--color-gray-600);
    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-200);
}

.value h4 {
    font-size: 15px;
    margin-bottom: 8px;
}

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

.about-visual {
    position: relative;
    display: flex;
    justify-content: center;
    padding-top: 40px;
}

.about-badge {
    width: 140px;
    height: 140px;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.badge-number {
    font-family: var(--font-display);
    font-size: 52px;
    font-weight: 700;
    color: var(--color-black);
    line-height: 1;
}

.badge-text {
    font-size: 11px;
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 4px;
}

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

.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-600);
    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: 11px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-gray-500);
}

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

.contact-item a:hover {
    color: var(--color-gray-600);
}

.contact-form-container {
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: 6px;
    padding: 44px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-gray-700);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 14px;
    font-family: var(--font-primary);
    font-size: 15px;
    color: var(--color-black);
    background: var(--color-white);
    border: 1px solid var(--color-gray-300);
    border-radius: 3px;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-gray-600);
}

.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 14px center;
}

.form-group textarea {
    resize: vertical;
    min-height: 110px;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    padding: 72px 0 36px;
    background: var(--color-gray-50);
    border-top: 1px solid var(--color-gray-200);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 80px;
    margin-bottom: 56px;
}

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

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

.footer-column h4 {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-gray-700);
    margin-bottom: 18px;
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

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

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

.footer-bottom {
    padding-top: 36px;
    border-top: 1px solid var(--color-gray-200);
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--color-gray-500);
}

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

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

    .case-featured {
        grid-column: span 2;
    }

    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .about-visual {
        order: -1;
        justify-content: flex-start;
        padding-top: 0;
    }

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

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

    .nav-links {
        display: none;
    }

    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-white);
        border-bottom: 1px solid var(--color-gray-200);
        padding: 24px;
        gap: 20px;
    }

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

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

    .hero-title {
        font-size: 32px;
    }

    .hero-rule {
        display: none;
    }

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

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

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

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

    .practice-card {
        padding: 32px;
    }

    .contact-form-container {
        padding: 28px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

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

/* ========================================
   Animations
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content > * {
    opacity: 0;
    animation: fadeInUp 0.7s 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; }