/* assets/css/style.css
   Production Tracker Pro — theme-aware, responsive stylesheet
   TODO #1: light/dark theme + responsive for all devices
*/

:root,
[data-theme="light"] {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --danger-color: #dc2626;
    --success-color: #16a34a;
    --warning-color: #d97706;
    --info-color: #0891b2;

    --background-color: #f3f4f6;
    --surface-color: #ffffff;
    --border-color: #e2e8f0;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --nav-bg: #ffffff;
    --nav-text: #0f172a;
    --shadow-color: rgba(15, 23, 42, 0.08);
}

[data-theme="dark"] {
    --primary-color: #3b82f6;
    --primary-hover: #60a5fa;
    --danger-color: #f87171;
    --success-color: #4ade80;
    --warning-color: #fbbf24;
    --info-color: #22d3ee;

    --background-color: #0f172a;
    --surface-color: #1e293b;
    --border-color: #334155;
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --nav-bg: #1e293b;
    --nav-text: #f1f5f9;
    --shadow-color: rgba(0, 0, 0, 0.4);
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background-color: var(--background-color);
    color: var(--text-main);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.2s ease, color 0.2s ease;
}

a { color: inherit; }

/* ---------- Navbar ---------- */
.navbar {
    background-color: var(--nav-bg);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 3px var(--shadow-color);
}
.nav-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.5rem;
    flex-wrap: wrap;
}
.nav-brand {
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--nav-text);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}
.brand-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary-color);
    display: inline-block;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex-wrap: wrap;
}
.nav-links a {
    text-decoration: none;
    color: var(--nav-text);
    padding: 0.5rem 0.85rem;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.92rem;
    transition: background-color 0.15s ease;
}
.nav-links a:hover { background-color: var(--background-color); }
.nav-links a.active { background-color: var(--primary-color); color: #fff; }
.btn-logout {
    background-color: var(--danger-color) !important;
    color: #fff !important;
}
.theme-toggle {
    background: var(--background-color);
    border: 1px solid var(--border-color);
    color: var(--nav-text);
    border-radius: 999px;
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1rem;
    margin: 0 0.25rem;
}
.icon-dark { display: none; }
[data-theme="dark"] .icon-light { display: none; }
[data-theme="dark"] .icon-dark { display: inline; }

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--nav-text);
    cursor: pointer;
}

@media (max-width: 900px) {
    .mobile-menu-toggle { display: block; }
    .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        align-items: stretch;
        padding-top: 0.5rem;
    }
    .nav-links.active { display: flex; }
    .nav-links a, .theme-toggle, .btn-logout {
        width: 100%;
        text-align: left;
        margin: 2px 0;
    }
    .theme-toggle { width: 100%; border-radius: 8px; justify-content: flex-start; padding-left: 0.85rem; }
}

/* ---------- Layout ---------- */
.main-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem;
}

.card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 2px var(--shadow-color);
}
.card-title {
    margin-top: 0;
    margin-bottom: 1.25rem;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-main);
}

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }

@media (max-width: 900px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .main-container { padding: 1rem; }
}
@media (min-width: 901px) and (max-width: 1200px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- Forms ---------- */
.form-group { margin-bottom: 1.1rem; }
.form-label {
    display: block;
    margin-bottom: 0.4rem;
    font-weight: 600;
    font-size: 0.88rem;
    color: var(--text-muted);
}
.form-control {
    width: 100%;
    padding: 0.65rem 0.85rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--surface-color);
    color: var(--text-main);
    font-size: 0.95rem;
    font-family: inherit;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.btn {
    display: inline-block;
    padding: 0.65rem 1.2rem;
    border-radius: 8px;
    border: none;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    color: #fff;
    background-color: var(--text-muted);
    transition: filter 0.15s ease, transform 0.05s ease;
}
.btn:hover { filter: brightness(1.08); }
.btn:active { transform: translateY(1px); }
.btn-primary { background-color: var(--primary-color); }
.btn-primary:hover { background-color: var(--primary-hover); }
.btn-sm { padding: 0.4rem 0.8rem; font-size: 0.82rem; }
.btn-ghost { background: transparent; color: var(--text-main); border: 1px solid var(--border-color); }

.radio-group { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.radio-option { display: flex; align-items: center; gap: 0.35rem; background: var(--background-color); border: 1px solid var(--border-color); border-radius: 8px; padding: 0.4rem 0.75rem; }
.radio-option label { cursor: pointer; margin: 0; }

.success-message, .error-message {
    padding: 0.85rem 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-weight: 500;
}
.success-message { background-color: rgba(22, 163, 74, 0.12); color: var(--success-color); border: 1px solid rgba(22,163,74,0.3); }
.error-message { background-color: rgba(220, 38, 38, 0.12); color: var(--danger-color); border: 1px solid rgba(220,38,38,0.3); }

/* ---------- Table ---------- */
.table-responsive { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td {
    padding: 0.7rem 0.85rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
    white-space: nowrap;
}
.table th { color: var(--text-muted); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em; }
.table tbody tr:hover { background-color: var(--background-color); }

/* ---------- Stat cards ---------- */
.stat-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--primary-color);
    border-radius: 10px;
    padding: 1.1rem 1.3rem;
}
.stat-label { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; color: var(--text-muted); margin-bottom: 0.35rem; }
.stat-value { font-size: 1.9rem; font-weight: 800; color: var(--text-main); }

/* ---------- Login ---------- */
.login-wrapper { display: flex; align-items: center; justify-content: center; min-height: 90vh; padding: 1rem; }
.login-card { max-width: 400px; width: 100%; }

/* ---------- Select2 theme integration ---------- */
.select2-container .select2-selection--single {
    height: 42px !important;
    border: 1px solid var(--border-color) !important;
    background-color: var(--surface-color) !important;
    border-radius: 8px !important;
}
.select2-container .select2-selection__rendered { color: var(--text-main) !important; line-height: 40px !important; }
.select2-container .select2-selection__arrow { height: 40px !important; }
.select2-dropdown { background-color: var(--surface-color) !important; border-color: var(--border-color) !important; color: var(--text-main); }
.select2-results__option { color: var(--text-main); }
.select2-container--default .select2-results__option--highlighted[aria-selected] { background-color: var(--primary-color) !important; }
.select2-search__field { background-color: var(--surface-color) !important; color: var(--text-main) !important; }

/* ---------- PWA install banner ---------- */
.pwa-install-banner {
    position: fixed;
    left: 1rem;
    right: 1rem;
    bottom: 1rem;
    max-width: 480px;
    margin: 0 auto;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 24px var(--shadow-color);
    border-radius: 12px;
    padding: 1rem 1.1rem;
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    z-index: 999;
}
.pwa-install-banner.visible { display: flex; flex-wrap: wrap; }
.pwa-install-text { display: flex; flex-direction: column; font-size: 0.85rem; color: var(--text-muted); }
.pwa-install-text strong { color: var(--text-main); font-size: 0.95rem; }
.pwa-install-actions { display: flex; gap: 0.5rem; }

/* ---------- Offline banner ---------- */
.offline-banner {
    display: none;
    background-color: var(--warning-color);
    color: #1f2937;
    text-align: center;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.5rem 1rem;
    position: sticky;
    top: 0;
    z-index: 200;
}
body.is-offline .offline-banner { display: block; }

/* ---------- Misc responsive tweaks ---------- */
@media (max-width: 600px) {
    .card { padding: 1.1rem; }
    .stat-value { font-size: 1.5rem; }
    .table th, .table td { font-size: 0.82rem; padding: 0.55rem; }
}