/* ===== Variables & Reset ===== */
:root {
    /* Named color constants */
    --gold:       #C9A84C;
    --gold-light: #E8C96A;
    --gold-dark:  #A8862A;
    --navy-900:   #000D1F;
    --navy-800:   #001233;
    --navy-700:   #001A47;
    --navy-600:   #002D77;
    --navy-500:   #002055;
    --navy-400:   #1A4797;
    --navy-300:   #4D8FE0;
    --navy-200:   #7FB3F5;
    --navy-100:   #D6E4F0;

    --primary: #002D77;
    --primary-dark: #6699CC;
    --primary-bright: #4D9FFF;
    --primary-dark-text: #242424;
    --secondary: #D6E4F0;
    --secondary-dark-text: #4A86C8;
    --tertiary: #001A47;
    --midnight-blue: #001A47;
    --off-black: #1f1f1f;
    --gray-100: #E1E1E1;
    --gray-200: #C8C8C8;
    --gray-300: #ACACAC;
    --gray-400: #919191;
    --gray-500: #6E6E6E;
    --gray-600: #404040;
    --gray-900: #212121;
    --gray-950: #141414;

    /* Light mode defaults */
    --bg: white;
    --bg-surface: white;
    --bg-page: #f0f4f9;
    --text: #1a2740;
    --text-muted: #5a7299;
    --border: #d0daea;
    --input-bg: white;
    --card-shadow: 0 4px 16px rgba(0,45,119,0.10);
    --navbar-bg: white;
    --accent: var(--gold);
    --accent-hover: var(--gold-dark);
    --btn-primary-bg: var(--primary);
    --btn-primary-text: white;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg:          var(--navy-800);
        --bg-surface:  var(--navy-500);
        --bg-page:     #002d77;
        --text:        white;
        --text-muted:  var(--navy-200);
        --border:      rgba(77,143,224,0.20);
        --input-bg:    var(--navy-700);
        --card-shadow: 0 4px 20px rgba(0,0,0,0.40);
        --navbar-bg:   var(--navy-900);
        --accent:      var(--gold);
        --accent-hover: var(--gold-light);
        --btn-primary-bg:   var(--gold);
        --btn-primary-text: #001233;
    }
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: var(--bg-page); color: var(--text); line-height: 1.6; }

/* ===== Navbar ===== */
.navbar { background: var(--navbar-bg); padding: 1rem 2rem; display: flex; align-items: center; box-shadow: 0 1px 0 rgba(0,0,0,0.08); }
.navbar a:not(.btn) { color: var(--navy-600); text-decoration: none; font-size: 0.9rem; font-weight: 500; letter-spacing: 0.01em; transition: color 0.15s; }
.navbar a:not(.btn):hover { color: var(--navy-800); }
.navbar .brand { flex: 0 0 auto; display: flex; align-items: center; gap: 0.5rem; }
.navbar .brand img { height: 32px; }
.qa-badge { background: #f59e0b; color: #000; font-size: 0.65rem; font-weight: 700; padding: 2px 6px; border-radius: 4px; letter-spacing: 0.05em; line-height: 1; }
.navbar .nav-links { flex: 1; display: flex; justify-content: center; gap: 0.5rem; align-items: center; }
.navbar .nav-links a:not(.btn) { padding: 0.35rem 0.85rem; border-radius: 9999px; }
.navbar .nav-links a:not(.btn):hover { background: var(--bg-page); }
.navbar .nav-links a.nav-active { background: var(--primary); color: white; }
.navbar .nav-links a.nav-active:hover { background: var(--primary); color: white; }
.navbar .nav-right { flex: 0 0 auto; display: flex; align-items: center; gap: 1rem; }
.navbar .nav-right a.nav-cta { background: var(--primary); color: white; padding: 0.35rem 0.85rem; border-radius: 9999px; }
.navbar .nav-right a.nav-cta:hover { background: var(--navy-800); color: white; }
.navbar .logout-form { display: inline; }
.navbar .logout-btn { background: none; border: none; color: var(--navy-600); cursor: pointer; font-size: 0.9rem; font-family: inherit; font-weight: 500; letter-spacing: 0.01em; padding: 0.35rem 0.85rem; border-radius: 9999px; transition: color 0.15s, background 0.15s; }
.navbar .logout-btn:hover { background: var(--bg-page); color: var(--navy-800); }

/* Language switcher */
.lang-switch { display: flex; align-items: center; gap: 0.35rem; }
.lang-btn { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.05em; color: var(--navy-600); padding: 0.2rem 0.4rem; border-radius: 4px; text-decoration: none; transition: color 0.15s; }
.lang-btn:hover { color: var(--navy-800); }
.lang-btn.lang-active { color: var(--primary); }
.lang-sep { font-size: 0.7rem; color: var(--navy-300); opacity: 0.5; }

@media (prefers-color-scheme: dark) {
    .navbar { box-shadow: none; border-bottom: 1px solid rgba(255,255,255,0.06); }
    .navbar a:not(.btn) { color: rgba(255,255,255,0.80); }
    .navbar a:not(.btn):hover { color: white; }
    .navbar .nav-links a:hover { background: rgba(255,255,255,0.08); }
    .navbar .nav-links a.nav-active { background: var(--gold); color: var(--navy-800); }
    .navbar .nav-links a.nav-active:hover { background: var(--gold); color: var(--navy-800); }
    .navbar .nav-right a.nav-cta { background: var(--gold); color: var(--navy-800); }
    .navbar .nav-right a.nav-cta:hover { background: var(--gold-light); color: var(--navy-800); }
    .navbar .logout-btn { color: rgba(255,255,255,0.80); }
    .navbar .logout-btn:hover { background: rgba(255,255,255,0.08); color: white; }
    .lang-btn { color: rgba(255,255,255,0.5); }
    .lang-btn:hover { color: white; }
    .lang-btn.lang-active { color: var(--gold); }
    .lang-sep { color: rgba(255,255,255,0.2); opacity: 1; }
}

/* ===== Layout ===== */
.container { max-width: 800px; margin: 2rem auto; padding: 0 1rem; }

/* ===== Card ===== */
.card { background: var(--bg-surface); padding: 2rem 2.25rem; border-radius: 16px; box-shadow: var(--card-shadow); margin-bottom: 1.5rem; border: 1px solid var(--border); transition: box-shadow 0.2s; }
.card h2 { margin-bottom: 1.25rem; font-size: 1.2rem; font-weight: 700; letter-spacing: -0.01em; color: var(--text); }

/* ===== Forms ===== */
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; margin-bottom: 0.25rem; color: var(--text-muted); font-size: 0.9rem; font-weight: 500; }
.form-group input, .form-group select { width: 100%; padding: 0.65rem 0.875rem; border: 1.5px solid var(--border); border-radius: 10px; font-size: 0.95rem; background: var(--input-bg); color: var(--text); transition: border-color 0.15s, box-shadow 0.15s; }
.form-group input:focus, .form-group select:focus { outline: none; border-color: var(--primary-bright); box-shadow: 0 0 0 3px rgba(77,159,255,0.20); }
.form-group input:disabled, .form-group select:disabled { background: var(--bg-page); color: var(--text-muted); }
.form-group select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23999' stroke-width='1.5' fill='none'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.75rem center; padding-right: 2.25rem; cursor: pointer; }

@media (prefers-color-scheme: dark) {
    .form-group input:focus, .form-group select:focus { border-color: var(--gold); box-shadow: 0 0 0 3px rgba(201,168,76,0.20); }
}

/* ===== Buttons ===== */
.btn { display: inline-block; padding: 0.7rem 1.6rem; border: none; border-radius: 9999px; font-size: 0.9rem; font-weight: 600; cursor: pointer; text-decoration: none; transition: background 0.18s, box-shadow 0.18s, transform 0.12s; letter-spacing: 0.01em; }
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--btn-primary-bg); color: var(--btn-primary-text); }
.btn-primary:hover { background: #003FA0; box-shadow: 0 4px 14px rgba(0,45,119,0.35); }
.btn-danger { background: #dc2626; color: white; }
.btn-danger:hover { background: #b91c1c; }
.btn-outline { background: transparent; border: 1.5px solid var(--border); color: var(--text-muted); }
.btn-outline:hover { background: var(--bg-page); border-color: var(--navy-300); }
.btn-sm { font-size: 0.85rem; padding: 0.4rem 1rem; }
.btn-full { width: 100%; margin-top: 0.5rem; }

@media (prefers-color-scheme: dark) {
    .btn-primary:hover { background: var(--accent-hover); box-shadow: 0 4px 14px rgba(201,168,76,0.4); }
}

/* ===== Alerts ===== */
.alert { padding: 0.75rem 1rem; border-radius: 8px; margin-bottom: 1rem; font-size: 0.9rem; }
.alert-success { background: #f0fdf4; color: #166534; border: 1px solid #bbf7d0; }
.alert-error { background: #fef2f2; color: #dc2626; border: 1px solid #fecaca; }

@media (prefers-color-scheme: dark) {
    .alert-success { background: rgba(22,101,52,0.15); color: #86efac; border-color: rgba(34,197,94,0.2); }
    .alert-error { background: rgba(220,38,38,0.1); color: #fca5a5; border-color: rgba(220,38,38,0.2); }
}

/* ===== Typography ===== */
.text-muted { color: var(--text-muted); font-size: 0.85rem; }
.text-link { color: var(--primary-bright); font-weight: 500; text-decoration: none; }
.text-link:hover { text-decoration: underline; }
.validation-message { color: #dc2626; font-size: 0.85rem; margin-top: 0.25rem; display: block; }
.text-success { color: #16a34a; }
.text-danger { color: #dc2626; }

@media (prefers-color-scheme: dark) {
    .text-link { color: var(--gold-light); }
    .text-link:hover { color: var(--gold); }
}

/* ===== Logo toggle ===== */
/* logo-light = colored logo for light navbar; logo-dark = white logo for dark navbar */
.logo-light { display: inline; }
.logo-dark { display: none; }
@media (prefers-color-scheme: dark) {
    .logo-light { display: none; }
    .logo-dark { display: inline; }
}

/* ===== Utility ===== */
.mb-xs { margin-bottom: 0.25rem; }
.mb-sm { margin-bottom: 0.5rem; }
.mb-md { margin-bottom: 0.75rem; }
.mb-lg { margin-bottom: 1rem; }
.mt-xs { margin-top: 0.25rem; }
.mt-sm { margin-top: 0.5rem; }
.mt-md { margin-top: 0.75rem; }
.mt-lg { margin-top: 1rem; }
.ml-sm { margin-left: 0.5rem; }
.flex-row { display: flex; gap: 1rem; flex-wrap: wrap; }
.flex-1 { flex: 1; }
.text-center { text-align: center; }

/* ===== Apps grid ===== */
.apps-grid { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 0.5rem; }
.app-card { display: flex; flex-direction: column; align-items: center; gap: 0.5rem; padding: 1.5rem 1.75rem; border: 1px solid var(--border); border-radius: 16px; text-decoration: none; color: var(--text); transition: background 0.18s, border-color 0.18s, box-shadow 0.18s, transform 0.12s; min-width: 120px; }
.app-card:hover { background: var(--bg-page); border-color: var(--primary-bright); box-shadow: 0 6px 20px rgba(0,45,119,0.15); transform: translateY(-2px); }
.app-card .app-icon { font-size: 2rem; color: var(--primary); }
.app-card .app-name { font-size: 0.9rem; font-weight: 600; }

@media (prefers-color-scheme: dark) {
    .app-card .app-icon { color: var(--gold); }
    .app-card:hover { border-color: var(--gold); box-shadow: 0 6px 20px rgba(0,0,0,0.4); }
}

/* ===== Lusos ===== */
.lusos-balance { font-size: 2.25rem; font-weight: 800; color: var(--primary); letter-spacing: -0.02em; }
.lusos-label { font-size: 1rem; font-weight: 400; }
.lusos-points { font-weight: 700; color: var(--primary); }
.tx-list { list-style: none; padding: 0; margin-top: 0.5rem; }
.tx-item { padding: 0.4rem 0; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; }

@media (prefers-color-scheme: dark) {
    .lusos-balance { color: var(--gold); }
    .lusos-points { color: var(--gold); }
}

/* ===== Auth pages ===== */
.auth-card { max-width: 400px; margin: 3rem auto; }
.auth-card-wide { max-width: 480px; margin: 3rem auto; }
.auth-logo { text-align: center; margin-bottom: 1.5rem; }
.auth-logo img { height: 40px; }

@media (prefers-color-scheme: dark) {
    .auth-card, .auth-card-wide { border-color: rgba(77,143,224,0.3); }
}

/* ===== Manage page ===== */
.provider-list { list-style: none; padding: 0; }
.provider-item { padding: 0.5rem 0; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 0.5rem; }

/* ===== Admin table ===== */
.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.table thead tr { border-bottom: 2px solid var(--border); text-align: left; }
.table thead th { font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); }
.table th,
.table td { padding: 0.5rem; }
.table tbody tr { border-bottom: 1px solid var(--border); }
.table tbody tr:hover { background: var(--bg-page); }

/* ===== Admin manage user ===== */
.app-access-row { display: flex; align-items: center; justify-content: space-between; padding: 0.75rem 0; border-bottom: 1px solid var(--border); }

/* ===== Status badges ===== */
.badge { display: inline-block; padding: 0.2rem 0.65rem; border-radius: 9999px; font-size: 0.78rem; font-weight: 600; letter-spacing: 0.02em; }
.badge-success { background: #d4f0e0; color: #1a6b3a; }
.badge-danger  { background: #fde8e8; color: #922; }
.badge-warning { background: #fef3cd; color: #7a5000; }

@media (prefers-color-scheme: dark) {
    .badge-success { background: rgba(26,107,58,0.35); color: #6ee09a; }
    .badge-danger  { background: rgba(180,30,30,0.35); color: #f87171; }
    .badge-warning { background: rgba(180,120,0,0.35); color: #fcd34d; }
}

/* ===== Tabs ===== */
.tabs { display: flex; gap: 0.25rem; margin-bottom: 1.5rem; border-bottom: 2px solid var(--border); overflow-x: auto; overflow-y: hidden; }
.tab-btn { background: none; border: none; padding: 0.6rem 1rem; font-size: 0.9rem; font-weight: 500; cursor: pointer; color: var(--text-muted); border-bottom: 2px solid transparent; margin-bottom: -2px; transition: color 0.15s, border-color 0.15s; white-space: nowrap; font-family: inherit; }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

@media (prefers-color-scheme: dark) {
    .tab-btn.active { color: var(--gold); border-bottom-color: var(--gold); }
}

/* ===== Mobile hamburger ===== */
.nav-toggle { display: none; background: none; border: none; color: inherit; font-size: 1.2rem; cursor: pointer; padding: 0.25rem 0.5rem; }

@media (max-width: 640px) {
    .nav-toggle { display: flex; align-items: center; }
    .navbar { flex-wrap: wrap; }
    .navbar .brand { flex: 1; }
    .navbar .nav-links,
    .navbar .nav-right { display: none; width: 100%; border-top: 1px solid var(--border); padding: 0.5rem 0; }
    .navbar .nav-links { flex-direction: column; gap: 0.25rem; order: 3; }
    .navbar .nav-right { flex-direction: row; flex-wrap: wrap; gap: 0.75rem; order: 4; padding-bottom: 0.75rem; }
    .navbar.nav-open .nav-links,
    .navbar.nav-open .nav-right { display: flex; }
    .navbar .nav-links a:not(.btn) { padding: 0.5rem 0.75rem; border-radius: 9999px; width: 100%; display: block; }
    .navbar .nav-right .logout-btn { width: auto; }
    .navbar .nav-right a.nav-cta { display: inline-block; }
}

/* ===== Utility ===== */
.text-right { text-align: right; }