:root {
    --primary: #1e40af;
    --primary-light: #3b82f6;
    --primary-dark: #1e3a8a;
    --success: #16a34a;
    --warning: #d97706;
    --danger: #dc2626;
    --info: #0891b2;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
}

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

html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--gray-800);
    background: var(--gray-100);
    line-height: 1.5;
    min-height: 100vh;
}

a { color: var(--primary-light); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---- Layout ---- */
.app-wrapper { display: flex; min-height: 100vh; }

.sidebar {
    width: 260px;
    background: var(--gray-900);
    color: #fff;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
    transition: transform 0.3s;
}

.sidebar-brand {
    padding: 1.25rem 1rem;
    font-size: 1.3rem;
    font-weight: 700;
    border-bottom: 1px solid var(--gray-700);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sidebar-brand svg { fill: var(--primary-light); }

.sidebar-nav { flex: 1; overflow-y: auto; padding: 0.5rem 0; }

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem 1rem;
    color: var(--gray-300);
    font-size: 0.9rem;
    transition: background 0.15s;
    border-left: 3px solid transparent;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    background: var(--gray-800);
    color: #fff;
    text-decoration: none;
    border-left-color: var(--primary-light);
}

.sidebar-nav .nav-section {
    padding: 0.75rem 1rem 0.25rem;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray-500);
}

.sidebar-footer {
    padding: 0.75rem 1rem;
    border-top: 1px solid var(--gray-700);
    font-size: 0.85rem;
    color: var(--gray-400);
}

.main-content {
    flex: 1;
    margin-left: 260px;
    min-width: 0;
}

.top-bar {
    background: #fff;
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 50;
}

.top-bar h1 { font-size: 1.15rem; font-weight: 600; }

.top-bar-actions { display: flex; gap: 0.75rem; align-items: center; }

.content-area { padding: 1.5rem; max-width: 1400px; }

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--gray-700);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.25rem;
}

/* ---- Cards ---- */
.card {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 1.25rem;
    overflow: hidden;
}

.card-header {
    padding: 0.85rem 1.15rem;
    border-bottom: 1px solid var(--gray-200);
    font-weight: 600;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-body { padding: 1.15rem; }

/* ---- Grid ---- */
.grid { display: grid; gap: 1.25rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ---- Stat Cards ---- */
.stat-card {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.stat-icon.blue { background: #dbeafe; color: var(--primary); }
.stat-icon.green { background: #dcfce7; color: var(--success); }
.stat-icon.orange { background: #fef3c7; color: var(--warning); }
.stat-icon.red { background: #fee2e2; color: var(--danger); }

.stat-value { font-size: 1.75rem; font-weight: 700; line-height: 1; }
.stat-label { font-size: 0.8rem; color: var(--gray-500); margin-top: 0.15rem; }

/* ---- Tables ---- */
.table-responsive { overflow-x: auto; }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }

th {
    text-align: left;
    padding: 0.7rem 0.85rem;
    background: var(--gray-50);
    border-bottom: 2px solid var(--gray-200);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--gray-600);
    white-space: nowrap;
}

td {
    padding: 0.65rem 0.85rem;
    border-bottom: 1px solid var(--gray-100);
    vertical-align: middle;
}

tr:hover td { background: var(--gray-50); }

/* ---- Badges / Status ---- */
.badge {
    display: inline-block;
    padding: 0.15rem 0.55rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
}

.badge-draft { background: var(--gray-200); color: var(--gray-700); }
.badge-planned { background: #dbeafe; color: var(--primary); }
.badge-briefed { background: #e0e7ff; color: #4338ca; }
.badge-ready { background: #fef3c7; color: var(--warning); }
.badge-in_progress, .badge-in-progress { background: #fef9c3; color: #a16207; }
.badge-completed { background: #dcfce7; color: var(--success); }
.badge-aborted { background: #fee2e2; color: var(--danger); }
.badge-cancelled { background: var(--gray-200); color: var(--gray-500); }
.badge-published { background: #dcfce7; color: var(--success); }
.badge-open { background: #fef3c7; color: var(--warning); }
.badge-low { background: #dcfce7; color: var(--success); }
.badge-medium { background: #fef3c7; color: var(--warning); }
.badge-high { background: #fed7aa; color: #c2410c; }
.badge-critical { background: #fee2e2; color: var(--danger); }

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.55rem 1.15rem;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 500;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s, box-shadow 0.15s;
    white-space: nowrap;
    line-height: 1.3;
}

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

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

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #15803d; }

.btn-warning { background: var(--warning); color: #fff; }
.btn-warning:hover { background: #b45309; }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; }

.btn-outline {
    background: transparent;
    border: 1px solid var(--gray-300);
    color: var(--gray-700);
}
.btn-outline:hover { background: var(--gray-50); }

.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.8rem; }
.btn-lg { padding: 0.75rem 1.5rem; font-size: 1rem; }

/* ---- Forms ---- */
.form-group { margin-bottom: 1rem; }

.form-label {
    display: block;
    margin-bottom: 0.3rem;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--gray-700);
}

.form-label .required { color: var(--danger); }

.form-control {
    width: 100%;
    padding: 0.55rem 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-family: inherit;
    background: #fff;
    transition: border-color 0.15s;
    color: var(--gray-800);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(59,130,246,0.15);
}

select.form-control { appearance: auto; }
textarea.form-control { resize: vertical; min-height: 80px; }

.form-row { display: flex; gap: 1rem; }
.form-row > .form-group { flex: 1; }

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
    width: 1.1rem;
    height: 1.1rem;
    accent-color: var(--primary);
}

.form-help {
    font-size: 0.8rem;
    color: var(--gray-500);
    margin-top: 0.2rem;
}

/* ---- Alerts ---- */
.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.alert-success { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.alert-error { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }
.alert-warning { background: #fef3c7; color: #92400e; border: 1px solid #fde68a; }
.alert-info { background: #e0f2fe; color: #075985; border: 1px solid #bae6fd; }

/* ---- Empty State ---- */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--gray-500);
}

.empty-state p { font-size: 1rem; margin-bottom: 1rem; }

/* ---- Confirm Dialog ---- */
.confirm-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.confirm-dialog {
    background: #fff;
    border-radius: var(--radius);
    padding: 1.5rem;
    min-width: 350px;
    max-width: 90vw;
    box-shadow: var(--shadow-md);
}

.confirm-dialog h3 { margin-bottom: 0.75rem; }
.confirm-dialog .btn-group { display: flex; gap: 0.5rem; justify-content: flex-end; margin-top: 1rem; }

/* ---- Responsive ---- */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .menu-toggle { display: block; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .form-row { flex-direction: column; gap: 0; }
    .content-area { padding: 1rem; }
    .top-bar { padding: 0.5rem 1rem; }

    .btn { padding: 0.65rem 1.25rem; font-size: 1rem; }
    .btn-lg { padding: 0.85rem 1.5rem; }
}

/* ---- Print ---- */
@media print {
    .sidebar, .top-bar, .btn, .menu-toggle { display: none !important; }
    .main-content { margin-left: 0; }
    .card { box-shadow: none; border: 1px solid #ddd; }
}