/* ========================================
   RMA Web2 — Design System
   Modern light theme with tech aesthetics
   ======================================== */

:root {
    --bg-primary: #f0f2f5;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #f8f9fb;
    --bg-input: #f5f7fa;
    --border: #e2e5ea;
    --border-focus: #4361ee;
    --text-primary: #1a1d2e;
    --text-secondary: #5a6178;
    --text-muted: #9098a9;
    --primary: #4361ee;
    --primary-hover: #3651d4;
    --primary-light: rgba(67, 97, 238, 0.08);
    --success: #10b981;
    --success-light: rgba(16, 185, 129, 0.08);
    --danger: #ef4444;
    --danger-light: rgba(239, 68, 68, 0.08);
    --warning: #f59e0b;
    --warning-light: rgba(245, 158, 11, 0.08);
    --info: #3b82f6;
    --radius: 10px;
    --radius-sm: 6px;
    --radius-lg: 14px;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 6px 16px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 4px 24px rgba(67, 97, 238, 0.08), 0 1px 4px rgba(0, 0, 0, 0.04);
    --transition: all 0.2s ease;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html {
    font-size: 14px;
}

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* ---- Navbar ---- */
.navbar {
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 700;
    font-size: 1.15rem;
}

.nav-brand svg {
    color: var(--primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-primary);
}

.nav-link-primary {
    color: var(--primary);
    background: var(--primary-light);
}

.nav-link-primary:hover {
    background: rgba(67, 97, 238, 0.14);
    color: var(--primary-hover);
}

.nav-link-logout {
    color: var(--danger);
}

.nav-link-logout:hover {
    background: var(--danger-light);
}

.nav-user {
    color: var(--text-muted);
    font-size: 0.85rem;
    padding: 0 8px;
    border-left: 1px solid var(--border);
    margin-left: 4px;
    padding-left: 12px;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 6px;
}

/* ---- Layout ---- */
.main-content {
    padding: 0;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 32px 24px 48px;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.page-header h1 {
    font-size: 1.6rem;
    font-weight: 700;
}

.page-subtitle {
    color: var(--text-secondary);
    margin-top: 4px;
}

/* ---- Auth Pages ---- */
.auth-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 32px 16px;
    background: linear-gradient(135deg, #f0f2f5 0%, #e8edf5 50%, #eef0f7 100%);
}

.auth-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px 36px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
}

.auth-card-wide {
    max-width: 600px;
}

.auth-header {
    text-align: center;
    margin-bottom: 28px;
}

.auth-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 12px 0 4px;
    color: var(--text-primary);
}

.auth-header svg {
    color: var(--primary);
}

.auth-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.auth-footer {
    text-align: center;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.auth-footer a {
    color: var(--primary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
}

.auth-footer a:hover {
    text-decoration: underline;
}

.auth-divider {
    color: var(--text-muted);
    margin: 0 8px;
}

/* ---- Cards ---- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
    overflow: visible;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    background: #fafbfc;
}

.card-header h2 {
    font-size: 1.05rem;
    font-weight: 600;
}

.card-body {
    padding: 24px;
}

.card-body.no-padding {
    padding: 0;
}

.card-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    background: #fafbfc;
}

/* ---- Forms ---- */
.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 5px;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: 10px 14px;
    height: 42px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font);
    font-size: 0.95rem;
    transition: var(--transition);
    outline: none;
}

textarea {
    height: auto;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--primary-light);
    background: #fff;
}

input::placeholder {
    color: var(--text-muted);
}

.input-disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.form-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
    display: block;
}

.optional {
    font-weight: 400;
    color: var(--text-muted);
    font-size: 0.8rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.form-row-3 {
    grid-template-columns: 1fr 1fr 1fr;
}

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

.form-section-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 14px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

.input-with-btn {
    display: flex;
    gap: 8px;
}

.input-with-btn select {
    flex: 1;
}

.input-with-btn .btn {
    height: 40px;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 12px;
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 1px 3px rgba(67, 97, 238, 0.3);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(67, 97, 238, 0.3);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

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

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

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

.btn-danger:hover {
    background: #dc2626;
    transform: translateY(-1px);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    color: var(--text-primary);
    background: var(--bg-input);
}

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

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

.btn-sm {
    padding: 6px 12px;
    font-size: 0.82rem;
}

.btn-lg {
    padding: 12px 28px;
    font-size: 1rem;
}

.btn-full {
    width: 100%;
}

.btn-icon {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    line-height: 1;
    transition: var(--transition);
}

.btn-icon:hover {
    color: var(--text-primary);
    background: var(--bg-input);
}

.btn-delete:hover {
    color: var(--danger);
    background: var(--danger-light);
}

/* ---- Alerts ---- */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    margin-bottom: 16px;
    font-weight: 500;
}

.alert-error {
    background: var(--danger-light);
    color: #dc2626;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.alert-success {
    background: var(--success-light);
    color: #059669;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

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

.data-table,
.rma-items-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.rma-items-table th {
    text-align: left;
    padding: 12px 16px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: #fafbfc;
    border-bottom: 1px solid var(--border);
}

.data-table td,
.rma-items-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

.data-table tr:hover {
    background: var(--bg-card-hover);
}

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

.rma-items-table td {
    padding: 8px 10px;
}

.rma-items-table input,
.rma-items-table select {
    font-size: 0.9rem;
}

.rma-number {
    font-weight: 600;
    color: var(--primary);
    font-family: 'Cascadia Code', 'Fira Code', monospace;
}

.product-cell {
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ---- Status Badges ---- */
.status-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: capitalize;
}

.status-Pending {
    background: var(--warning-light);
    color: #d97706;
}

.status-Received {
    background: rgba(59, 130, 246, 0.08);
    color: var(--info);
}

.status-Processing {
    background: var(--primary-light);
    color: var(--primary);
}

.status-Complete {
    background: var(--success-light);
    color: #059669;
}

.status-badge[class*="Waiting"] {
    background: rgba(59, 130, 246, 0.08);
    color: var(--info);
}

/* ---- Pagination ---- */
.pagination {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin-top: 24px;
}

.page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.page-link:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: var(--primary);
}

.page-link.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* ---- Autocomplete ---- */
.autocomplete-wrapper {
    position: relative;
}

.autocomplete-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    max-height: 200px;
    overflow-y: auto;
    z-index: 50;
    box-shadow: var(--shadow);
}

.autocomplete-item {
    padding: 10px 14px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
}

.autocomplete-item:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.autocomplete-empty {
    padding: 10px 14px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ---- Modal ---- */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(4px);
    z-index: 200;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.modal-overlay.show {
    display: flex;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    border-bottom: 1px solid var(--border);
}

.modal-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 16px 24px;
    border-top: 1px solid var(--border);
}

/* ---- Policy ---- */
.policy-text {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 20px;
    margin-bottom: 16px;
    max-height: 200px;
    overflow-y: auto;
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.policy-text h3 {
    color: var(--text-primary);
    margin-bottom: 8px;
    font-size: 1rem;
}

.policy-text ul {
    padding-left: 20px;
}

.policy-text li {
    margin-bottom: 4px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
}

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

/* ---- Success Page ---- */
.success-icon {
    text-align: center;
    margin-bottom: 16px;
}

.success-title {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--success);
    margin-bottom: 8px;
}

.success-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.success-rma-number {
    text-align: center;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
}

.success-rma-number .label {
    display: block;
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.success-rma-number .number {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary);
    font-family: 'Cascadia Code', 'Fira Code', monospace;
    letter-spacing: 2px;
}

.success-note {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.88rem;
    margin-bottom: 24px;
}

.success-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
}

/* ---- Empty State ---- */
.empty-state {
    text-align: center;
    padding: 60px 24px;
    color: var(--text-muted);
}

.empty-state svg {
    margin-bottom: 16px;
    opacity: 0.3;
}

.empty-state h2 {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.empty-state p {
    margin-bottom: 24px;
}

/* ---- Profile Grid ---- */
.profile-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.card-full {
    grid-column: 1 / -1;
}

.address-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 14px;
}

.address-card {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.address-card strong {
    color: var(--text-primary);
}

/* ---- Misc ---- */
.divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 20px 0;
}

.text-muted {
    color: var(--text-muted);
}

.version-tag {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-top: 16px;
    opacity: 0.5;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 56px;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        border-bottom: 1px solid var(--border);
        padding: 12px;
        gap: 4px;
        box-shadow: var(--shadow);
    }

    .nav-links.show {
        display: flex;
    }

    .nav-toggle {
        display: block;
    }

    .nav-user {
        border: none;
        margin: 0;
        padding: 6px 14px;
    }

    .form-row,
    .form-row-3 {
        grid-template-columns: 1fr;
    }

    .profile-grid {
        grid-template-columns: 1fr;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .success-actions {
        flex-direction: column;
    }

    .auth-card {
        padding: 28px 20px;
    }

    .container {
        padding: 20px 16px 40px;
    }
}