/**
 * APS Portal - Unified Theme
 * 
 * CSS variables for light/dark mode + common components.
 * All modules use these variables for consistent styling.
 */

/* ─── THEME VARIABLES ───────────────────────────────────────────────────────── */
[data-theme="dark"] {
    --bg: #0f1117;
    --bg-elevated: #1a1b23;
    --card: #1a1b23;
    --card-hover: #22232d;
    --border: #2a2b35;
    --border-strong: #3a3b45;
    
    --text: #e4e4e7;
    --text-dim: #71717a;
    --text-mid: #a1a1aa;
    
    --input-bg: #0f1117;
    --input-border: #2a2b35;
    --input-focus: #6366f1;
    
    --table-header-bg: rgba(15, 17, 23, 0.5);
    --hover-bg: rgba(99, 102, 241, 0.02);
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

[data-theme="light"] {
    --bg: #f4f4f5;
    --bg-elevated: #ffffff;
    --card: #ffffff;
    --card-hover: #fafafa;
    --border: #e4e4e7;
    --border-strong: #d4d4d8;
    
    --text: #18181b;
    --text-dim: #a1a1aa;
    --text-mid: #71717a;
    
    --input-bg: #f4f4f5;
    --input-border: #e4e4e7;
    --input-focus: #6366f1;
    
    --table-header-bg: #fafafa;
    --hover-bg: rgba(99, 102, 241, 0.03);
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

/* Accent colors (same for both themes) */
:root {
    --accent: #6366f1;
    --accent-hover: #5558e6;
    --accent-glow: rgba(99, 102, 241, 0.15);
    --accent-bg: rgba(99, 102, 241, 0.08);
    
    --success: #4ade80;
    --success-bg: rgba(34, 197, 94, 0.1);
    --success-border: rgba(34, 197, 94, 0.3);
    
    --danger: #f87171;
    --danger-bg: rgba(239, 68, 68, 0.1);
    --danger-border: rgba(239, 68, 68, 0.3);
    
    --warning: #fbbf24;
    --warning-bg: rgba(251, 191, 36, 0.1);
    --warning-border: rgba(251, 191, 36, 0.3);
    
    --info: #60a5fa;
    --info-bg: rgba(96, 165, 250, 0.1);
    --info-border: rgba(96, 165, 250, 0.3);
}

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

body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.5;
    transition: background 0.3s, color 0.3s;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* ─── TOPBAR / NAVIGATION ───────────────────────────────────────────────────── */
.topbar {
    background: var(--card);
    border-bottom: 1px solid var(--border);
    padding: 12px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background 0.3s;
    flex-wrap: wrap;
    gap: 12px;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 24px;
}

.topbar-left h1 {
    font-size: 17px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-mid);
    text-decoration: none;
    transition: all 0.2s;
}

.nav-link:hover {
    color: var(--text);
    background: var(--hover-bg);
    text-decoration: none;
}

.nav-link.active {
    color: var(--accent);
    background: var(--accent-bg);
}

.nav-icon {
    font-size: 15px;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-info {
    font-size: 14px;
    color: var(--text-mid);
}

.user-info strong {
    color: var(--text);
}

.user-role {
    font-size: 12px;
    color: var(--text-dim);
    margin-left: 8px;
    padding: 2px 8px;
    background: var(--bg);
    border-radius: 4px;
}

.theme-toggle {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: all 0.2s;
    color: var(--text-mid);
}

.theme-toggle:hover {
    border-color: var(--accent);
    color: var(--text);
}

.btn-logout {
    color: var(--text-dim);
    font-size: 13px;
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: all 0.2s;
}

.btn-logout:hover {
    border-color: var(--danger);
    color: var(--danger);
    text-decoration: none;
}

/* ─── MAIN CONTENT ──────────────────────────────────────────────────────────── */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 32px 24px 80px;
}

/* ─── CARDS ─────────────────────────────────────────────────────────────────── */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
    transition: background 0.3s;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

/* ─── FORMS ─────────────────────────────────────────────────────────────────── */
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 16px;
}

.form-group {
    margin-bottom: 16px;
}

label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-dim);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"],
input[type="date"],
input[type="time"],
select,
textarea {
    width: 100%;
    padding: 11px 14px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 8px;
    color: var(--text);
    font-size: 14px;
    font-family: inherit;
    transition: all 0.2s;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2371717a' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 32px;
}

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

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-mid);
    cursor: pointer;
}

input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent);
    cursor: pointer;
}

/* ─── BUTTONS ───────────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn:hover {
    text-decoration: none;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-secondary {
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--accent);
}

.btn-danger {
    background: var(--danger-bg);
    color: var(--danger);
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.2);
}

.btn-success {
    background: var(--success-bg);
    color: var(--success);
}

.btn-ghost {
    background: transparent;
    color: var(--text-mid);
    border: 1px solid var(--border);
}

.btn-ghost:hover {
    border-color: var(--text-mid);
    color: var(--text);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 15px;
}

/* ─── TABLES ────────────────────────────────────────────────────────────────── */
.table-wrapper {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    text-align: left;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 14px 16px;
    background: var(--table-header-bg);
    border-bottom: 1px solid var(--border);
}

td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background: var(--hover-bg);
}

/* ─── MESSAGES / ALERTS ─────────────────────────────────────────────────────── */
.message {
    padding: 14px 18px;
    border-radius: 10px;
    font-size: 14px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.message-success {
    background: var(--success-bg);
    border: 1px solid var(--success-border);
    color: var(--success);
}

.message-error {
    background: var(--danger-bg);
    border: 1px solid var(--danger-border);
    color: var(--danger);
}

.message-warning {
    background: var(--warning-bg);
    border: 1px solid var(--warning-border);
    color: #d97706;
}

.message-info {
    background: var(--info-bg);
    border: 1px solid var(--info-border);
    color: var(--info);
}

/* ─── TOAST NOTIFICATIONS ───────────────────────────────────────────────────── */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(80px);
    background: var(--card);
    color: var(--text);
    padding: 12px 24px;
    border-radius: 10px;
    font-size: 14px;
    opacity: 0;
    transition: all 0.3s;
    z-index: 1000;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    pointer-events: none;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast-success {
    border-color: var(--success-border);
    background: var(--success-bg);
    color: var(--success);
}

.toast-error {
    border-color: var(--danger-border);
    background: var(--danger-bg);
    color: var(--danger);
}

/* ─── BADGES / PILLS ────────────────────────────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
}

.badge-primary {
    background: var(--accent-bg);
    color: var(--accent);
}

.badge-success {
    background: var(--success-bg);
    color: var(--success);
}

.badge-danger {
    background: var(--danger-bg);
    color: var(--danger);
}

.badge-warning {
    background: var(--warning-bg);
    color: #d97706;
}

/* ─── LOADING SPINNER ───────────────────────────────────────────────────────── */
.spinner {
    width: 20px;
    height: 20px;
    border: 2.5px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ─── UTILITIES ─────────────────────────────────────────────────────────────── */
.text-dim { color: var(--text-dim); }
.text-mid { color: var(--text-mid); }
.text-accent { color: var(--accent); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }

.text-center { text-align: center; }
.text-right { text-align: right; }

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }

.hidden { display: none !important; }

/* ─── MINIMAL PAGE (login, public forms) ────────────────────────────────────── */
.minimal-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 24px;
}

.minimal-page .card {
    width: 100%;
    max-width: 400px;
}

/* ─── RESPONSIVE ────────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
    .topbar {
        padding: 12px 16px;
    }
    
    .topbar-left {
        width: 100%;
        justify-content: space-between;
    }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--card);
        border-bottom: 1px solid var(--border);
        padding: 12px;
        flex-direction: column;
    }
    
    .nav-links.show {
        display: flex;
    }
    
    .nav-link {
        width: 100%;
        padding: 12px 16px;
    }
    
    .topbar-right {
        display: none;
    }
    
    .main-content {
        padding: 16px 16px 60px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}