/* ════════════════════════════════════════════════════════════════════════════
   GLOBAL STYLES - Tryplicity
   Include this file on every page for consistent styling
   This is the MASTER design system - all pages must use these tokens
════════════════════════════════════════════════════════════════════════════ */

/* CSS Variables - Design System */
:root {
    /* Primary: Sky Blue - Trust & Clarity */
    --forest-900: #0c4a6e;
    --forest-800: #075985;
    --forest-700: #0369a1;
    --forest-600: #0284c7;
    --forest-500: #0ea5e9;
    --forest-400: #38bdf8;
    --forest-300: #7dd3fc;

    /* Carbon - Authority */
    --carbon-950: #0a0a0a;
    --carbon-900: #171717;
    --carbon-800: #262626;
    --carbon-700: #404040;
    --carbon-600: #525252;
    --carbon-500: #737373;
    --carbon-400: #a3a3a3;
    --carbon-300: #d4d4d4;
    --carbon-200: #e5e5e5;
    --carbon-100: #f5f5f5;
    --carbon-50: #fafafa;

    /* Warm White */
    --paper: #fefdfb;
    --paper-warm: #faf9f7;

    /* Accent Colors */
    --gold: #ca8a04;
    --gold-light: #eab308;

    /* Coral - Alerts & Emphasis */
    --coral: #ef4444;
    --coral-soft: #fee2e2;

    /* Typography */
    --font-sans: 'Outfit', system-ui, sans-serif;
    --font-serif: 'Source Serif 4', Georgia, serif;
    --font-mono: 'Fira Code', monospace;

    /* Borders & Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-subtle: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-soft: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-medium: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-strong: 0 16px 48px rgba(0, 0, 0, 0.16);
    --shadow-glow: 0 0 32px rgba(2, 132, 199, 0.2);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* Spacing Scale */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;
}

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

body {
    font-family: var(--font-sans);
    background: var(--paper);
    color: var(--carbon-700);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Global Link Styles */
a {
    color: inherit;
    text-decoration: none;
}

/* Links in content areas (articles, docs, etc.) - excludes footer and navigation */
.article-content a,
.content a:not(.btn):not(.logo):not(.nav__link):not(.back-link),
p a:not(.footer a),
li a:not(.footer__links a) {
    color: var(--forest-600);
    text-decoration: underline;
    text-decoration-color: var(--forest-400);
    text-underline-offset: 2px;
    transition: all var(--transition-fast);
}

.article-content a:hover,
.content a:not(.btn):not(.logo):not(.nav__link):not(.back-link):hover,
p a:not(.footer a):hover,
li a:not(.footer__links a):hover {
    color: var(--forest-700);
    text-decoration-color: var(--forest-600);
}

/* Image Defaults */
img {
    max-width: 100%;
    display: block;
}

/* Utility Classes */
.wrap {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 80px 40px;
}

/* Global Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-sans);
    color: var(--carbon-900);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-4);
}

h1 {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -0.03em;
}

h2 {
    font-size: 1.8rem;
    margin-top: var(--space-8);
}

h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--carbon-800);
}

p {
    margin-bottom: var(--space-4);
    color: var(--carbon-700);
}

ul, ol {
    margin: var(--space-4) 0 var(--space-4) 30px;
    color: var(--carbon-700);
}

li {
    margin-bottom: var(--space-2);
}

/* Global Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--carbon-200);
    z-index: 1000;
    padding: var(--space-4) 0;
}

.nav-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-back {
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    color: var(--carbon-600);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.nav-back:hover {
    color: var(--carbon-900);
}

/* Global Page Header */
.page-header {
    padding: 140px 32px 80px;
    text-align: center;
    background: linear-gradient(180deg, var(--paper-warm) 0%, var(--paper) 100%);
    border-bottom: 1px solid var(--carbon-200);
}

.page-header h1 {
    margin-bottom: var(--space-4);
}

.tagline {
    font-size: 1.2rem;
    color: var(--carbon-500);
}

.last-updated {
    color: var(--carbon-500);
    font-family: var(--font-sans);
    font-size: 0.95rem;
}

/* Global Sections */
.section {
    margin-bottom: var(--space-12);
}

/* Global Back Link */
.back-link {
    display: inline-block;
    margin-bottom: var(--space-8);
    color: var(--carbon-600);
    text-decoration: none;
    transition: color var(--transition-fast);
    font-family: var(--font-sans);
}

.back-link:hover {
    color: var(--carbon-900);
}

/* Global Button System */
.btn, .btn-primary, .btn-secondary, .btn-outline, .btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary, .btn--primary {
    background: var(--forest-600);
    color: white;
}

.btn-primary:hover, .btn--primary:hover {
    background: var(--forest-700);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium), var(--shadow-glow);
}

.btn-secondary, .btn--secondary {
    background: white;
    color: var(--carbon-700);
    border: 2px solid var(--carbon-200);
}

.btn-secondary:hover, .btn--secondary:hover {
    background: var(--carbon-50);
    border-color: var(--carbon-300);
    transform: translateY(-2px);
}

.btn-outline, .btn--outline {
    background: transparent;
    color: var(--carbon-700);
    border: 2px solid var(--carbon-200);
}

.btn-outline:hover, .btn--outline:hover {
    border-color: var(--carbon-400);
    background: var(--carbon-50);
}

.btn-ghost, .btn--ghost {
    background: transparent;
    color: var(--carbon-600);
    padding: var(--space-2) var(--space-4);
}

.btn-ghost:hover, .btn--ghost:hover {
    color: var(--carbon-900);
    background: var(--carbon-100);
}

.btn-large, .btn-lg, .btn--lg {
    padding: var(--space-4) var(--space-8);
    font-size: 1.0625rem;
    border-radius: var(--radius-lg);
}

.btn-icon, .btn--icon {
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: var(--radius-md);
}

/* Logo Component - Shared across pages */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

.logo:hover {
    opacity: 0.8;
}

.logo__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--forest-600);
    border-radius: var(--radius-md);
    color: white;
    font-size: 1.125rem;
}

.logo__text {
    font-family: var(--font-sans);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--carbon-900);
    letter-spacing: -0.02em;
}

/* Selection */
::selection {
    background: var(--forest-500);
    color: white;
}

::-moz-selection {
    background: var(--forest-500);
    color: white;
}

/* Scrollbar (Webkit) */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--carbon-100);
}

::-webkit-scrollbar-thumb {
    background: var(--carbon-300);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--carbon-400);
}