/* webroot/css/app.css - Transfer Certificate Upload Portal Stylesheet */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@500;600&display=swap');

:root {
    --primary: #0f766e;
    --primary-hover: #0d9488;
    --primary-bg: #ccfbf1;
    --dark: #0f172a;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-500: #64748b;
    --gray-700: #334155;
    --gray-900: #0f172a;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 14px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.12);
}

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

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background-color: var(--gray-100);
    color: var(--gray-900);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Navbar */
.navbar {
    background: #0f172a;
    color: #fff;
    padding: 14px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: #fff;
}

.brand-icon {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, #0d9488, #0f766e);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.brand-title {
    font-weight: 800;
    font-size: 1.1rem;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-item-link {
    color: rgba(255,255,255,0.75);
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 600;
    padding: 8px 14px;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.nav-item-link:hover, .nav-item-link.active {
    background: rgba(255,255,255,0.12);
    color: #fff;
}

.main-container {
    max-width: 1100px;
    margin: 32px auto;
    padding: 0 20px;
    width: 100%;
    flex: 1;
}

/* Cards */
.card {
    background: #fff;
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    margin-bottom: 24px;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #fff;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gray-900);
}

.card-body {
    padding: 28px;
}

/* Forms */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.form-control {
    width: 100%;
    padding: 11px 14px;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 0.92rem;
    font-family: inherit;
    transition: all 0.2s ease;
    outline: none;
    background: #fff;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.15);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: all 0.2s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: #fff;
    box-shadow: 0 2px 8px rgba(15, 118, 110, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 4px 14px rgba(15, 118, 110, 0.4);
    transform: translateY(-1px);
}

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

.btn-outline:hover {
    background: var(--gray-100);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
}

.btn-danger {
    background: #dc2626;
    color: #fff;
}

/* Tables */
.table-responsive {
    width: 100%;
    overflow-x: auto;
}

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

.table th {
    background: var(--gray-50);
    padding: 14px 18px;
    text-align: left;
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-500);
    border-bottom: 2px solid var(--gray-200);
}

.table td {
    padding: 14px 18px;
    border-bottom: 1px solid var(--gray-200);
    vertical-align: middle;
}

.table tbody tr:hover {
    background-color: var(--gray-50);
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
}

.badge-code {
    background: var(--gray-100);
    color: var(--dark);
    font-family: 'JetBrains Mono', monospace;
    border: 1px solid var(--gray-300);
}

/* Flash Messages */
.message {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.message.success { background: #dcfce7; color: #15803d; border: 1px solid #bbf7d0; }
.message.error { background: #fee2e2; color: #b91c1c; border: 1px solid #fecaca; }

footer {
    text-align: center;
    padding: 24px;
    color: var(--gray-500);
    font-size: 0.82rem;
    border-top: 1px solid var(--gray-200);
    background: #fff;
    margin-top: auto;
}