/* ============================================
   CSS VARIABLES - Dark Theme
   ============================================ */
:root {
    /* Primary blues - pulled from logo */
    --blue-primary: #00B4D8;
    --blue-dark: #0077B6;
    --blue-light: #90E0EF;
    
    /* Dark theme colors */
    --dark-900: #0a0a0f;
    --dark-800: #12121a;
    --dark-700: #1a1a24;
    --dark-600: #24242f;
    --dark-500: #2e2e3a;
    
    /* Light colors for text */
    --light-100: #ffffff;
    --light-200: #f0f0f5;
    --light-300: #d0d0d8;
    --light-400: #a0a0ad;
    --light-500: #707080;
    --light-600: #505060;
    
    /* Typography */
    --font-primary: 'IBM Plex Sans', -apple-system, sans-serif;
    --font-accent: 'IBM Plex Serif', Georgia, serif;
    
    /* Spacing */
    --section-padding: 80px;
    --section-padding-compact: 56px;
    --container-width: 1100px;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 18px;
    line-height: 1.7;
    color: var(--light-300);
    background-color: var(--dark-900);
    -webkit-font-smoothing: antialiased;
}

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

.container-narrow {
    max-width: 720px;
}

section {
    padding: var(--section-padding) 0;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3 {
    font-weight: 600;
    color: var(--light-100);
    line-height: 1.2;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    margin-bottom: 24px;
}

h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

p {
    margin-bottom: 20px;
}

p:last-child {
    margin-bottom: 0;
}

.accent-text {
    font-family: var(--font-accent);
    font-style: italic;
    color: var(--light-400);
}

.bold {
    font-weight: 600;
    color: var(--light-200);
}

/* ============================================
   NAVIGATION
   ============================================ */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-mark {
    width: 40px;
    height: 40px;
}

.logo-text {
    font-size: 1rem;
    font-weight: 600;
    color: var(--light-100);
    letter-spacing: -0.01em;
}

.logo-text span {
    color: var(--light-500);
    font-weight: 400;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--light-400);
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-links a:hover {
    color: var(--light-100);
}

.nav-cta {
    background: linear-gradient(135deg, var(--blue-dark), var(--blue-primary));
    color: var(--light-100) !important;
    padding: 10px 20px;
    border-radius: 6px;
    transition: all 0.3s ease !important;
}

.nav-cta:hover {
    box-shadow: 0 4px 20px rgba(0, 180, 216, 0.3);
    transform: translateY(-1px);
}

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--light-100);
    margin: 5px 0;
    transition: 0.3s;
}

/* ============================================
   FOOTER
   ============================================ */
footer {
    background: var(--dark-900);
    padding: 48px 0 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-logo svg {
    width: 32px;
    height: 32px;
}

.footer-logo-text {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--light-300);
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-links a {
    color: var(--light-400);
    text-decoration: none;
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--light-100);
}

.footer-contact {
    display: flex;
    gap: 32px;
}

.footer-contact a {
    color: var(--light-400);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

.footer-contact a:hover {
    color: var(--blue-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 0.85rem;
    color: var(--light-500);
}

/* Inner pages — homepage section styles live in home.css */

/* Page shell */
.page-main { padding-top: 72px; }

.page-hero {
    padding: 56px 0 40px;
    background: linear-gradient(180deg, var(--dark-800) 0%, var(--dark-900) 100%);
    border-bottom: 1px solid rgba(0, 180, 216, 0.1);
}

.page-hero p {
    color: var(--light-400);
    font-size: 1.1rem;
    max-width: 560px;
    margin-top: 12px;
}

.eyebrow {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--blue-primary);
    margin-bottom: 12px;
}

.section-block {
    padding: var(--section-padding) 0;
}

.section-block.alt { background: var(--dark-800); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--blue-dark), var(--blue-primary));
    color: var(--light-100);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 180, 216, 0.25);
}

.btn-secondary {
    background: transparent;
    color: var(--light-200);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Process steps */
.steps { max-width: 720px; }

.step {
    display: grid;
    grid-template-columns: 56px 1fr;
    gap: 24px;
    padding: 32px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.step:last-child { border-bottom: none; }

.step-num {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--blue-primary);
    opacity: 0.9;
}

.step ul {
    margin: 12px 0 16px 1.2rem;
    color: var(--light-400);
}

.step li { margin-bottom: 6px; }

.step-outcome {
    font-size: 0.95rem;
    color: var(--light-200);
    padding: 12px 16px;
    background: rgba(0, 180, 216, 0.06);
    border-left: 3px solid var(--blue-primary);
    border-radius: 0 8px 8px 0;
}

.step-outcome strong { color: var(--blue-primary); }

/* Table */
.data-table-wrap { overflow-x: auto; }

table.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

.data-table th,
.data-table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.data-table th {
    color: var(--light-200);
    font-weight: 600;
    background: var(--dark-700);
}

.data-table td { color: var(--light-400); }

/* FAQ */
.faq-item {
    padding: 24px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.faq-item h3 { margin-bottom: 8px; }
.faq-item p { color: var(--light-400); font-size: 0.95rem; }

/* Form */
.form-grid {
    display: grid;
    gap: 20px;
    max-width: 520px;
}

.form-row label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--light-200);
    margin-bottom: 6px;
}

.form-row input,
.form-row select,
.form-row textarea {
    width: 100%;
    padding: 12px 14px;
    background: var(--dark-700);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 8px;
    color: var(--light-100);
    font-family: inherit;
    font-size: 0.95rem;
}

.form-row textarea { min-height: 100px; resize: vertical; }

.form-hint {
    font-size: 0.85rem;
    color: var(--light-500);
    margin-top: 16px;
}

.slot-group {
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 16px;
    margin: 0;
}

.slot-group legend {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--blue-primary);
    padding: 0 6px;
}

.slot-group-optional legend {
    color: var(--light-400);
}

.slot-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.form-message {
    font-size: 0.9rem;
    margin: 0;
}

.form-message-error {
    color: #f87171;
}

.form-success-panel {
    max-width: 520px;
    padding: 24px;
    border-radius: 10px;
    background: rgba(0, 180, 216, 0.08);
    border: 1px solid rgba(0, 180, 216, 0.25);
}

.form-success-panel h3 {
    margin-bottom: 10px;
}

.form-success-panel p {
    color: var(--light-300);
    margin: 0;
}

.expect-list {
    list-style: none;
    margin: 20px 0;
}

.expect-list li {
    padding: 8px 0 8px 28px;
    position: relative;
    color: var(--light-300);
}

.expect-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--blue-primary);
    font-weight: 600;
}

.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

/* CTA band */
.cta-band {
    padding: var(--section-padding) 0;
    text-align: center;
    background: var(--dark-800);
}

.cta-band h2 { margin-bottom: 12px; }

.cta-band .btn { margin-top: 20px; }

.cta-band .contact-line {
    margin-top: 20px;
    font-size: 0.95rem;
    color: var(--light-500);
}

/* Case study */
.case-meta {
    font-size: 0.85rem;
    color: var(--blue-primary);
    margin-bottom: 12px;
}

blockquote {
    border-left: 3px solid var(--blue-primary);
    padding: 16px 20px;
    margin: 24px 0;
    color: var(--light-400);
    font-style: italic;
    background: rgba(255, 255, 255, 0.02);
}

.pill-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 16px 0;
}

.pill {
    font-size: 0.85rem;
    padding: 8px 14px;
    border-radius: 100px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--light-300);
}

@media (max-width: 768px) {
    .nav-toggle { display: block; }
    .slot-row { grid-template-columns: 1fr; }
    .nav-links {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--dark-900);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        transform: translateY(-100%);
        opacity: 0;
        transition: all 0.3s ease;
        pointer-events: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }
    .footer-content {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
    .footer-contact {
        flex-direction: column;
        gap: 12px;
    }
    .two-col { grid-template-columns: 1fr; }
    .step { grid-template-columns: 40px 1fr; gap: 16px; }
}