/* ==========================================================================
   Design Tokens & CSS Custom Properties
   ========================================================================== */
:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --bg: #f9fafb;
    --card-bg: #ffffff;
    --text-main: #111827;
    --text-muted: #6b7280;
    --border: #e5e7eb;
    --badge-bg: #e0e7ff;
    --badge-text: #3730a3;
    --danger: #dc2626;
    --danger-hover: #b91c1c;
    --success-bg: #d1fae5;
    --success-text: #065f46;
    --error-bg: #fee2e2;
    --error-text: #991b1b;
}

/* ==========================================================================
   Base & Resets
   ========================================================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text-main);
    line-height: 1.5;
    padding: 1.5rem;
    min-height: 100vh;
}

body.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ==========================================================================
   Layout & Containers
   ========================================================================== */
.container {
    max-width: 900px;
    margin: 0 auto;
}

.container-sm {
    max-width: 800px;
    margin: 0 auto;
}

.auth-container {
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
}

/* ==========================================================================
   Navbar & Navigation
   ========================================================================== */
.navbar {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.navbar h1 {
    font-size: 1.25rem;
    font-weight: 700;
}

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

.user-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
}

.nav-links a {
    color: var(--primary);
    text-decoration: none;
    font-size: 0.9rem;
    margin-left: 1rem;
}

.nav-links a.btn-logout {
    color: var(--danger);
}

.back-link {
    display: inline-block;
    margin-bottom: 1rem;
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
}

.back-link:hover {
    text-decoration: underline;
}

/* ==========================================================================
   Cards
   ========================================================================== */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.card h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 1.25rem 0 0.75rem 0;
}

.card-auth {
    text-align: center;
    padding: 2.25rem 2rem;
}

.card-auth h1 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

.card-auth.danger h1 {
    color: var(--error-text);
}

.card-auth .subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.brand-icon {
    width: 48px;
    height: 48px;
    background: var(--badge-bg);
    color: var(--badge-text);
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
}

/* ==========================================================================
   Alerts & Notifications
   ========================================================================== */
.alert-success {
    background: var(--success-bg);
    color: var(--success-text);
    padding: 10px 14px;
    border-radius: 6px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    font-weight: 500;
}

.alert-error {
    background: var(--error-bg);
    color: var(--error-text);
    padding: 10px 14px;
    border-radius: 6px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    font-weight: 500;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
button, .btn {
    font-family: inherit;
}

.btn-primary,
button.btn-primary,
button[type="submit"]:not(.btn-danger):not(.btn-secondary) {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.6rem 1.25rem;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: background 0.15s ease;
}

.btn-primary:hover,
button.btn-primary:hover,
button[type="submit"]:not(.btn-danger):not(.btn-secondary):hover {
    background: var(--primary-hover);
}

.btn-secondary {
    background: #4b5563;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.85rem;
    transition: background 0.15s ease;
}

.btn-secondary:hover {
    background: #374151;
}

.btn-danger {
    background: var(--danger);
    color: white;
    border: none;
    padding: 4px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    transition: background 0.15s ease;
}

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

.btn-google {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 0.75rem 1.25rem;
    background: #ffffff;
    color: #374151;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.btn-google:hover {
    background: #f9fafb;
    border-color: #d1d5db;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

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

.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.35rem;
}

.form-control {
    width: 100%;
    padding: 0.6rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.95rem;
    font-family: inherit;
}

textarea.form-control,
textarea {
    width: 100%;
    min-height: 100px;
    padding: 0.6rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.95rem;
    font-family: inherit;
    resize: vertical;
    margin-bottom: 0.5rem;
}

.form-inline {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 1rem;
    align-items: center;
}

.form-inline .form-control {
    width: auto;
}

.form-inline input[type="email"].form-control,
.form-inline input[type="text"].form-control,
.form-inline input[type="text"] {
    flex-grow: 1;
    min-width: 200px;
    padding: 0.6rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.95rem;
    font-family: inherit;
}

/* ==========================================================================
   Topics & Tags
   ========================================================================== */
.topic-checkboxes {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 0.25rem;
    margin-bottom: 0.75rem;
}

.topic-checkbox {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.85rem;
    background: #f3f4f6;
    padding: 4px 8px;
    border-radius: 6px;
    border: 1px solid transparent;
    cursor: pointer;
    user-select: none;
}

.topic-checkbox.bordered {
    background: #ffffff;
    border-color: var(--border);
}

.filter-bar {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.filter-pill {
    background: #e5e7eb;
    color: #374151;
    padding: 6px 12px;
    border-radius: 9999px;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
}

.filter-pill.active {
    background: var(--primary);
    color: white;
}

.topic-tag {
    background: var(--badge-bg);
    color: var(--badge-text);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.75rem;
    margin-right: 4px;
    font-weight: 500;
}

.badge-role {
    background: var(--badge-bg);
    color: var(--badge-text);
    padding: 2px 10px;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-count {
    background: #f3f4f6;
    color: #4b5563;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.85rem;
}

/* ==========================================================================
   Feed & Request Items
   ========================================================================== */
.request-item {
    border-bottom: 1px solid var(--border);
    padding-bottom: 1.25rem;
    margin-bottom: 1.25rem;
}

.request-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.request-title {
    font-size: 1.1rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--text-main);
}

.request-title:hover {
    color: var(--primary);
}

.request-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin: 0.25rem 0 0.75rem 0;
}

/* ==========================================================================
   View Request Detail & Comments
   ========================================================================== */
.request-header {
    border-bottom: 1px solid var(--border);
    padding-bottom: 1rem;
    margin-bottom: 1rem;
}

.request-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.leader-controls {
    background: #f3f4f6;
    border: 1px solid var(--border);
    padding: 1.25rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
}

.leader-controls h3 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.05em;
}

.comment-item {
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
}

.comment-item:last-child {
    border-bottom: none;
}

.comment-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

/* ==========================================================================
   Tables & Status
   ========================================================================== */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

th, td {
    text-align: left;
    padding: 12px;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
    vertical-align: middle;
}

th {
    background: #f3f4f6;
    font-weight: 600;
}

.status-badge {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
}

.status-active {
    background: var(--success-bg);
    color: var(--success-text);
}

.status-disabled {
    background: var(--error-bg);
    color: var(--error-text);
}

.badge-you {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-left: 4px;
}

.current-user-note {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-style: italic;
    white-space: nowrap;
}

.mobile-cell-label {
    display: none;
}

/* Specific Desktop Table Layouts */
.topics-table .topic-edit-form {
    display: flex;
    gap: 6px;
    align-items: center;
}

.topics-table .topic-input {
    padding: 4px 8px;
    font-size: 0.9rem;
    min-width: 180px;
}

.topics-table .btn-save {
    padding: 4px 10px;
    font-size: 0.85rem;
    white-space: nowrap;
}

.topics-table .btn-delete {
    padding: 4px 10px;
    font-size: 0.85rem;
}

.users-table .user-update-form {
    display: inline-flex;
    gap: 6px;
    align-items: center;
}

.users-table .user-field-group {
    display: inline-flex;
    align-items: center;
}

.users-table .user-select {
    padding: 4px 8px;
    font-size: 0.85rem;
}

.users-table .btn-remove {
    padding: 4px 10px;
    font-size: 0.85rem;
}

/* ==========================================================================
   Responsive & Mobile Styles
   ========================================================================== */
@media (max-width: 640px) {
    body {
        padding: 0.875rem;
    }

    .card {
        padding: 1rem;
        margin-bottom: 1rem;
        border-radius: 10px;
    }

    .navbar {
        padding: 0.875rem 1rem;
        margin-bottom: 1rem;
        border-radius: 10px;
    }

    .navbar h1 {
        font-size: 1.15rem;
    }

    /* Prevent iOS/mobile Chrome auto-zoom on form focus */
    .form-control,
    input[type="text"],
    input[type="email"],
    select,
    textarea {
        font-size: 16px;
    }

    /* Stack inline forms on mobile */
    .form-inline {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }

    .form-inline .form-control,
    .form-inline input[type="text"].form-control,
    .form-inline input[type="email"].form-control,
    .form-inline select.form-control {
        width: 100%;
        min-width: 100%;
        padding: 0.65rem 0.75rem;
    }

    .form-inline button,
    .form-inline .btn-primary {
        width: 100%;
        justify-content: center;
        padding: 0.7rem 1.25rem;
    }

    /* Responsive Table Card Transformation */
    table.table-responsive,
    .table-responsive tbody,
    .table-responsive tr,
    .table-responsive td {
        display: block;
        width: 100%;
    }

    table.table-responsive thead {
        display: none;
    }

    table.table-responsive tbody tr {
        background: var(--card-bg);
        border: 1px solid var(--border);
        border-radius: 8px;
        padding: 0.875rem;
        margin-bottom: 0.875rem;
        box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
    }

    table.table-responsive tbody tr:last-child {
        margin-bottom: 0;
    }

    table.table-responsive td {
        padding: 0;
        border-bottom: none;
    }

    .mobile-cell-label {
        display: inline-block;
    }

    /* Topics Table Mobile Card */
    .topics-table .topic-row {
        display: grid;
        grid-template-columns: 1fr auto;
        gap: 8px 12px;
        align-items: center;
    }

    .topics-table .topic-name-cell {
        grid-column: 1 / -1;
    }

    .topics-table .topic-edit-form {
        display: flex;
        gap: 8px;
        width: 100%;
    }

    .topics-table .topic-edit-form .topic-input {
        flex: 1;
        min-width: 0;
        padding: 0.55rem 0.75rem;
        font-size: 16px;
    }

    .topics-table .topic-edit-form .btn-save {
        padding: 0.55rem 1.1rem;
        font-size: 0.9rem;
        flex-shrink: 0;
    }

    .topics-table .topic-slug-cell {
        grid-column: 1;
        font-size: 0.85rem;
        display: flex;
        align-items: center;
        gap: 6px;
    }

    .topics-table .topic-slug-cell .mobile-cell-label {
        font-size: 0.8rem;
        color: var(--text-muted);
        font-weight: 600;
    }

    .topics-table .topic-count-cell {
        grid-column: 1;
    }

    .topics-table .topic-actions-cell {
        grid-column: 2;
        grid-row: 2 / 4;
        justify-self: end;
    }

    .topics-table .btn-delete {
        padding: 8px 14px;
        font-size: 0.85rem;
    }

    /* Users Table Mobile Card */
    .users-table .user-row {
        display: grid;
        grid-template-columns: 1fr auto;
        gap: 8px 10px;
        align-items: center;
    }

    .users-table .user-email-cell {
        grid-column: 1;
        word-break: break-all;
        font-size: 0.95rem;
    }

    .users-table .user-status-cell {
        grid-column: 2;
        justify-self: end;
    }

    .users-table .user-controls-cell {
        grid-column: 1 / -1;
        padding: 6px 0;
        border-top: 1px dashed var(--border);
        border-bottom: 1px dashed var(--border);
    }

    .users-table .user-update-form {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 8px;
        width: 100%;
    }

    .users-table .user-field-group {
        display: flex;
        flex-direction: column;
        gap: 3px;
    }

    .users-table .user-field-group .mobile-cell-label {
        font-size: 0.75rem;
        font-weight: 600;
        color: var(--text-muted);
        text-transform: uppercase;
        letter-spacing: 0.03em;
    }

    .users-table .user-select {
        width: 100%;
        padding: 0.5rem 0.6rem;
        font-size: 16px;
        border-radius: 6px;
    }

    .users-table .user-date-cell {
        grid-column: 1;
        font-size: 0.8rem;
        color: var(--text-muted);
        display: flex;
        align-items: center;
        gap: 4px;
    }

    .users-table .user-actions-cell {
        grid-column: 2;
        justify-self: end;
    }

    .users-table .btn-remove {
        padding: 6px 14px;
        font-size: 0.85rem;
    }
}