/* ===== JF PETROLEUM CORPORATE DESIGN SYSTEM ===== */
/* Matches www.jfpetrogroup.com and www.jfpetroparts.com branding */
:root {
    --font-heading: 'Oswald', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-body: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --radius: 8px;
    --radius-lg: 12px;
    --transition: 0.2s ease;

    /* JFP Brand Colors */
    --jfp-navy: #0e143e;
    --jfp-blue: #1890d7;
    --jfp-blue-dark: #2b7bb9;
    --jfp-teal: #00AFD2;
    --jfp-orange: #ff6900;
}

/* Light Mode (default) - Clean, professional */
[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --bg-card: #ffffff;
    --text-primary: #0e143e;
    --text-secondary: #495057;
    --text-tertiary: #757575;
    --border: rgba(14, 20, 62, 0.1);
    --accent: #1890d7;
    --accent-hover: #2b7bb9;
    --accent-cta: #00AFD2;
    --shadow: 0 2px 8px rgba(14, 20, 62, 0.08);
    --shadow-lg: 0 4px 20px rgba(14, 20, 62, 0.12);
}

/* Dark Mode - Deep navy, high contrast */
[data-theme="dark"] {
    --bg-primary: #050810;
    --bg-secondary: #0a0f1f;
    --bg-tertiary: #121830;
    --bg-card: #0d1225;
    --text-primary: #ffffff;
    --text-secondary: #c8d0e0;
    --text-tertiary: #8892a8;
    --border: rgba(255, 255, 255, 0.15);
    --accent: #3aa8ff;
    --accent-hover: #00d4ff;
    --accent-cta: #00d4ff;
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.6);
}

/* Dark mode explicit overrides for maximum contrast */
[data-theme="dark"] body {
    background: #050810;
}

[data-theme="dark"] .search-box,
[data-theme="dark"] .quick-card,
[data-theme="dark"] .answer-card,
[data-theme="dark"] .result-card {
    background: #0d1225;
    border-color: rgba(58, 168, 255, 0.2);
}

[data-theme="dark"] .search-box input,
[data-theme="dark"] input,
[data-theme="dark"] textarea,
[data-theme="dark"] select {
    background: #0a0f1f;
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.15);
}

[data-theme="dark"] .search-box input::placeholder,
[data-theme="dark"] input::placeholder,
[data-theme="dark"] textarea::placeholder {
    color: #8892a8;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    transition: background var(--transition), color var(--transition);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== TEAMS EMBEDDED MODE ===== */
/* Hide redundant navigation when embedded in Teams */
body.in-teams .header {
    display: none;
}
body.in-teams .main-content {
    padding-top: 16px;
}
body.in-teams .mobile-menu {
    display: none !important;
}

h1, h2, h3, .hero-title, .section-label, .wo-title, .insight-title {
    font-family: var(--font-heading);
    font-weight: 600;
    letter-spacing: 0.02em;
}

/* ===== ACCESSIBILITY: FOCUS INDICATORS ===== */
/* Visible focus ring for keyboard navigation (not mouse clicks) */
:focus-visible {
    outline: 2px solid var(--jfp-teal, #00AFD2);
    outline-offset: 2px;
}

/* Remove default outline for mouse users, keep for keyboard */
:focus:not(:focus-visible) {
    outline: none;
}

/* High-contrast focus for dark backgrounds (header, side menu, modals) */
.header :focus-visible,
.side-menu :focus-visible,
.nda-modal :focus-visible,
.diagnostic-modal :focus-visible {
    outline-color: #00AFD2;
    outline-offset: 2px;
}

/* Focus ring for filter chips and quick cards */
.filter-chip:focus-visible,
.quick-card:focus-visible,
.quick-action:focus-visible,
.issue-btn:focus-visible {
    outline: 2px solid var(--jfp-teal, #00AFD2);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(0, 175, 210, 0.2);
}

/* Skip link for keyboard users (hidden until focused) */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--jfp-teal, #00AFD2);
    color: white;
    padding: 8px 16px;
    z-index: 10000;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 0 0 8px 0;
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: 0;
}