/* Base Styles & Typography */
:root {
    --primary-color: #1e3a8a;
    --primary-hover: #1d4ed8;
    --secondary-color: #0f172a;
    --accent-color: #0284c7;
    --bg-light: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #334155;
    --border-color: #e2e8f0;
    --success-color: #16a34a;
    --warning-color: #d97706;
    --danger-color: #dc2626;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-light);
    color: var(--text-color);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

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

a:hover {
    text-decoration: underline;
}

/* Layout Elements */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background-color: var(--secondary-color);
    color: #ffffff;
    padding: 15px 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    font-size: 1.4rem;
    font-weight: bold;
    color: #ffffff;
}

.brand span {
    color: var(--accent-color);
}

nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
    align-items: center;
}

nav a {
    color: #cbd5e1;
    font-weight: 500;
    padding: 5px 10px;
    border-radius: 4px;
    transition: all 0.2s;
}

nav a:hover, nav a.active {
    color: #ffffff;
    background-color: rgba(255, 255, 255, 0.1);
    text-decoration: none;
}

.btn {
    display: inline-block;
    padding: 8px 16px;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    font-size: 0.95rem;
    transition: background-color 0.2s;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    color: #ffffff;
    text-decoration: none;
}

.btn-secondary {
    background-color: #64748b;
    color: #ffffff;
}

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

.btn-sm {
    padding: 4px 10px;
    font-size: 0.85rem;
}

main {
    flex: 1;
    padding: 40px 0;
}

.main-layout {
    display: flex;
    gap: 30px;
}

.main-content {
    flex: 1;
}

aside.sidebar {
    width: 280px;
    background: var(--card-bg);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    height: fit-content;
}

/* Cards & Content Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.card-title {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--secondary-color);
}

/* Flash Messages */
.alert {
    padding: 12px 20px;
    margin-bottom: 20px;
    border-radius: 6px;
    font-weight: 500;
}

.alert-success {
    background-color: #dcfce7;
    color: #15803d;
    border: 1px solid #bbf7d0;
}

.alert-danger {
    background-color: #fee2e2;
    color: #b91c1c;
    border: 1px solid #fecaca;
}

.alert-info {
    background-color: #e0f2fe;
    color: #0369a1;
    border: 1px solid #bae6fd;
}

/* Forms */
.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
}

.form-control {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.95rem;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    margin-top: 15px;
}

.table th, .table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    background-color: #f1f5f9;
    font-weight: 600;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 3px 8px;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 4px;
    text-transform: uppercase;
}

.badge-success { background: #dcfce7; color: #15803d; }
.badge-warning { background: #fef3c7; color: #b45309; }
.badge-danger { background: #fee2e2; color: #b91c1c; }
.badge-info { background: #e0f2fe; color: #0369a1; }

/* Ticket Thread */
.ticket-thread {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.message-bubble {
    padding: 15px;
    border-radius: 8px;
    max-width: 80%;
}

.message-customer {
    background-color: #e0f2fe;
    align-self: flex-start;
    border: 1px solid #bae6fd;
}

.message-admin {
    background-color: #f1f5f9;
    align-self: flex-end;
    border: 1px solid #cbd5e1;
}

.message-meta {
    font-size: 0.8rem;
    color: #64748b;
    margin-bottom: 5px;
}

footer {
    background-color: var(--secondary-color);
    color: #cbd5e1;
    padding: 20px 0;
    text-align: center;
    margin-top: auto;
}