/* FileShare - GitLab-inspired Dark Theme with Sidebar */

:root {
    /* Colors - GitLab Dark Theme */
    --color-bg: #0d0d0d;
    --color-bg-elevated: #1a1a1a;
    --color-bg-hover: #252525;
    --color-surface: #1f1f1f;
    --color-border: #2d2d2d;
    --color-border-light: #3d3d3d;

    /* Brand Colors */
    --color-primary: #6b4fbb;
    --color-primary-hover: #7c5fcb;
    --color-primary-light: rgba(107, 79, 187, 0.12);

    /* Semantic Colors */
    --color-success: #108548;
    --color-success-light: rgba(16, 133, 72, 0.12);
    --color-warning: #ab6100;
    --color-warning-light: rgba(171, 97, 0, 0.12);
    --color-danger: #dd2b0e;
    --color-danger-light: rgba(221, 43, 14, 0.12);
    --color-info: #1f75cb;

    /* Text Colors */
    --color-text: #fafafa;
    --color-text-secondary: #999;
    --color-text-muted: #666;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans', Ubuntu, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;

    /* Layout */
    --top-bar-height: 48px;
    --sidebar-width: 220px;
    --sidebar-collapsed-width: 48px;

    /* Transitions */
    --transition: 150ms ease;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
html { font-size: 14px; -webkit-font-smoothing: antialiased; }
body { margin: 0; font-family: var(--font-family); color: var(--color-text); background: var(--color-bg); }
a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-hover); }
svg { display: inline-block; vertical-align: middle; }

/* ========================================
   Top Bar
   ======================================== */
.top-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--top-bar-height);
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 0 16px;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    z-index: 100;
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: 8px;
}

.sidebar-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    color: var(--color-text-secondary);
    background: none;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.sidebar-toggle:hover {
    color: var(--color-text);
    background: var(--color-bg-hover);
}

.top-bar-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text);
    font-weight: 600;
    font-size: 15px;
}

.top-bar-logo:hover { color: var(--color-text); }
.top-bar-logo svg { color: var(--color-primary); }

.top-bar-center { flex: 1; max-width: 480px; margin: 0 auto; }

.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-box svg {
    position: absolute;
    left: 10px;
    color: var(--color-text-muted);
    pointer-events: none;
}

.search-input {
    width: 100%;
    height: 32px;
    padding: 0 36px;
    font-size: 13px;
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 4px;
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px var(--color-primary-light);
}

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

.search-shortcut {
    position: absolute;
    right: 8px;
    padding: 2px 6px;
    font-size: 11px;
    color: var(--color-text-muted);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 3px;
}

.top-bar-right { display: flex; align-items: center; }

/* User Dropdown */
.user-dropdown { position: relative; }

.user-dropdown-trigger {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    color: var(--color-text-secondary);
    background: none;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.user-dropdown-trigger:hover {
    color: var(--color-text);
    background: var(--color-bg-hover);
}

.user-avatar {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    font-size: 12px;
    font-weight: 600;
    color: white;
    background: var(--color-primary);
    border-radius: 50%;
}

.user-dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    width: 200px;
    margin-top: 4px;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
    display: none;
    z-index: 200;
}

.user-dropdown-menu.active { display: block; }

.user-dropdown-header {
    padding: 12px;
    border-bottom: 1px solid var(--color-border);
}

.user-dropdown-name { font-weight: 600; font-size: 13px; }
.user-dropdown-email { font-size: 12px; color: var(--color-text-secondary); margin-top: 2px; }
.user-dropdown-divider { height: 1px; background: var(--color-border); }

.user-dropdown-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    font-size: 13px;
    color: var(--color-text-secondary);
}

.user-dropdown-item:hover {
    color: var(--color-text);
    background: var(--color-bg-hover);
}

/* ========================================
   App Container & Sidebar
   ======================================== */
.app-container {
    display: flex;
    padding-top: var(--top-bar-height);
    min-height: 100vh;
}

.sidebar {
    position: fixed;
    top: var(--top-bar-height);
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    z-index: 50;
    transition: width var(--transition), transform var(--transition);
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

.sidebar.collapsed .sidebar-item span,
.sidebar.collapsed .sidebar-section-title,
.sidebar.collapsed .sidebar-footer {
    display: none;
}

.sidebar-nav {
    flex: 1;
    padding: 8px;
    overflow-y: auto;
}

.sidebar-section {
    margin-bottom: 8px;
}

.sidebar-section-title {
    padding: 8px 12px 4px;
    font-size: 11px;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.sidebar-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    font-size: 13px;
    color: var(--color-text-secondary);
    border-radius: 4px;
    transition: all var(--transition);
}

.sidebar-item:hover {
    color: var(--color-text);
    background: var(--color-bg-hover);
}

.sidebar-item.active {
    color: var(--color-text);
    background: var(--color-primary-light);
}

.sidebar-item.active svg {
    color: var(--color-primary);
}

.sidebar-footer {
    padding: 8px;
    border-top: 1px solid var(--color-border);
}

/* ========================================
   Main Content
   ======================================== */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 24px;
    transition: margin-left var(--transition);
}

.main-content.sidebar-collapsed {
    margin-left: var(--sidebar-collapsed-width);
}

/* ========================================
   Page Layout
   ======================================== */
.page-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--color-border);
}

.page-title {
    margin: 0;
    font-size: 20px;
    font-weight: 600;
}

.page-description {
    margin: 4px 0 0;
    font-size: 13px;
    color: var(--color-text-secondary);
}

.page-actions {
    display: flex;
    gap: 8px;
    margin-left: auto;
}

/* ========================================
   Content Tabs (like GitLab)
   ======================================== */
.content-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--color-border);
}

.content-tab {
    padding: 12px 16px;
    font-size: 13px;
    color: var(--color-text-secondary);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all var(--transition);
}

.content-tab:hover {
    color: var(--color-text);
}

.content-tab.active {
    color: var(--color-text);
    border-bottom-color: var(--color-primary);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    height: 32px;
    padding: 0 12px;
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--transition);
}

.btn:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border-light);
}

.btn-sm { height: 28px; padding: 0 10px; font-size: 12px; }
.btn-lg { height: 36px; padding: 0 16px; }
.btn-block { width: 100%; }

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

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

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

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

.btn-danger:hover {
    background: #c42408;
}

.btn-outline { background: transparent; }

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

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

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

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

.btn-group { display: flex; gap: 4px; }

/* ========================================
   Forms
   ======================================== */
.form-group { margin-bottom: 16px; }

.form-label {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    font-weight: 500;
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    height: 32px;
    padding: 0 10px;
    font-family: inherit;
    font-size: 13px;
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    transition: all var(--transition);
}

.form-textarea {
    height: auto;
    padding: 8px 10px;
    resize: vertical;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px var(--color-primary-light);
}

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

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23999' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 32px;
}

.form-hint {
    margin-top: 4px;
    font-size: 12px;
    color: var(--color-text-muted);
}

.form-row {
    display: flex;
    gap: 8px;
}

.form-row > * { flex: 1; }

/* ========================================
   Tables
   ======================================== */
.table-container {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    overflow: hidden;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th, .table td {
    padding: 12px 16px;
    text-align: left;
    font-size: 13px;
}

.table th {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-secondary);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
}

.table td {
    border-bottom: 1px solid var(--color-border);
}

.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: var(--color-bg-hover); }

.text-right { text-align: right !important; }
.text-center { text-align: center !important; }
.text-muted { color: var(--color-text-muted) !important; }

/* ========================================
   Badges
   ======================================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    font-size: 11px;
    font-weight: 500;
    border-radius: 10px;
}

.badge-success { color: var(--color-success); background: var(--color-success-light); }
.badge-warning { color: var(--color-warning); background: var(--color-warning-light); }
.badge-danger { color: var(--color-danger); background: var(--color-danger-light); }
.badge-secondary { color: var(--color-text-secondary); background: var(--color-surface); }
.badge-primary { color: var(--color-primary); background: var(--color-primary-light); }

.role-badge {
    display: inline-flex;
    padding: 2px 6px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    border-radius: 3px;
    margin-top: 6px;
}

.role-admin { color: var(--color-primary); background: var(--color-primary-light); }
.role-user { color: var(--color-text-secondary); background: var(--color-surface); }

/* ========================================
   Cards
   ======================================== */
.card {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 6px;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid var(--color-border);
}

.card-header h2, .card-header h3 {
    margin: 0;
    font-size: 14px;
    font-weight: 600;
}

.card-body { padding: 16px; }

/* ========================================
   Alerts & Toasts
   ======================================== */
.alert {
    padding: 12px 16px;
    margin-bottom: 16px;
    font-size: 13px;
    border-radius: 4px;
}

.alert-danger {
    color: var(--color-danger);
    background: var(--color-danger-light);
    border: 1px solid rgba(221, 43, 14, 0.2);
}

.alert-success {
    color: var(--color-success);
    background: var(--color-success-light);
    border: 1px solid rgba(16, 133, 72, 0.2);
}

.alert-info {
    color: var(--color-info);
    background: rgba(31, 117, 203, 0.12);
    border: 1px solid rgba(31, 117, 203, 0.2);
}

.toast {
    position: fixed;
    top: calc(var(--top-bar-height) + 16px);
    right: 16px;
    z-index: 300;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    font-size: 13px;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
    animation: slideIn 0.3s ease;
}

.toast-success { border-left: 3px solid var(--color-success); }
.toast-error { border-left: 3px solid var(--color-danger); }

.toast-close {
    padding: 0;
    font-size: 18px;
    color: var(--color-text-muted);
    background: none;
    border: none;
    cursor: pointer;
    line-height: 1;
}

.toast-close:hover { color: var(--color-text); }

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* ========================================
   Auth Pages (Full Screen)
   ======================================== */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.auth-card {
    width: 100%;
    max-width: 400px;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 32px;
}

.auth-header {
    text-align: center;
    margin-bottom: 24px;
}

.auth-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    margin: 0 auto 16px;
    color: var(--color-primary);
}

.auth-header h1 {
    margin: 0 0 8px;
    font-size: 20px;
    font-weight: 600;
}

.auth-header p {
    margin: 0;
    font-size: 13px;
    color: var(--color-text-secondary);
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
    font-size: 13px;
    color: var(--color-text-secondary);
}

/* ========================================
   File List
   ======================================== */
.file-list-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--color-border);
}

.file-list-item:last-child { border-bottom: none; }
.file-list-item:hover { background: var(--color-bg-hover); }

.file-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    color: var(--color-text-muted);
    background: var(--color-surface);
    border-radius: 4px;
}

.file-info { flex: 1; min-width: 0; }

.file-name {
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-meta {
    display: flex;
    gap: 12px;
    margin-top: 2px;
    font-size: 12px;
    color: var(--color-text-muted);
}

.file-actions { display: flex; gap: 4px; }

/* ========================================
   Upload Zone
   ======================================== */
.upload-zone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 48px;
    border: 2px dashed var(--color-border);
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition);
}

.upload-zone:hover, .upload-zone.dragover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.upload-zone svg { color: var(--color-text-muted); }
.upload-zone p { margin: 0; font-size: 13px; color: var(--color-text-secondary); }
.upload-input { display: none; }

.upload-progress { padding: 16px; }

.progress-bar {
    height: 6px;
    background: var(--color-surface);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 0;
    background: var(--color-primary);
    transition: width 0.3s ease;
}

.progress-text {
    margin-top: 8px;
    font-size: 12px;
    color: var(--color-text-secondary);
    text-align: center;
}

/* ========================================
   Empty State
   ======================================== */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 48px 24px;
    text-align: center;
}

.empty-state svg {
    color: var(--color-text-muted);
    margin-bottom: 16px;
}

.empty-state h3 {
    margin: 0 0 8px;
    font-size: 16px;
    font-weight: 600;
}

.empty-state p {
    margin: 0 0 16px;
    font-size: 13px;
    color: var(--color-text-secondary);
}

/* ========================================
   Modal
   ======================================== */
.modal {
    position: fixed;
    inset: 0;
    z-index: 400;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(0, 0, 0, 0.6);
}

.modal.active { display: flex; }

.modal-content {
    width: 100%;
    max-width: 500px;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    box-shadow: 0 16px 48px rgba(0,0,0,0.4);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    border-bottom: 1px solid var(--color-border);
}

.modal-header h2 { margin: 0; font-size: 16px; font-weight: 600; }

.modal-close {
    padding: 0;
    font-size: 20px;
    color: var(--color-text-muted);
    background: none;
    border: none;
    cursor: pointer;
    line-height: 1;
}

.modal-close:hover { color: var(--color-text); }
.modal-body { padding: 16px; }

/* ========================================
   Grid & Layout Utilities
   ======================================== */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

.flex { display: flex; }
.flex-center { align-items: center; }
.flex-between { justify-content: space-between; }
.gap-sm { gap: 8px; }
.gap-md { gap: 16px; }

.inline-form { display: inline; }
.mb-0 { margin-bottom: 0 !important; }
.mt-md { margin-top: 16px; }

/* ========================================
   Share Components
   ======================================== */
.share-url-box {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

.share-url-box .form-input {
    flex: 1;
    font-family: var(--font-mono);
    font-size: 12px;
}

.invite-link-display {
    padding: 12px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 12px;
    word-break: break-all;
}

/* Copy button state */
.copy-btn.copied { color: var(--color-success); }

/* ========================================
   User Cell in Tables
   ======================================== */
.user-cell {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-avatar-small {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    font-size: 12px;
    font-weight: 600;
    color: white;
    background: var(--color-primary);
    border-radius: 50%;
    flex-shrink: 0;
}

.user-info {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.user-name {
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-email {
    font-size: 12px;
    color: var(--color-text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ========================================
   Admin Specific Styles
   ======================================== */
.empty-state-small {
    padding: 32px;
    text-align: center;
    color: var(--color-text-muted);
}

.invite-url-box {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

.invite-url-box .form-input {
    flex: 1;
    font-family: var(--font-mono);
    font-size: 12px;
}

.form-actions {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}

.card-title {
    margin: 0;
    font-size: 14px;
    font-weight: 600;
}

.card-body.p-0 {
    padding: 0;
}

.mb-4 {
    margin-bottom: 24px;
}

.mt-2 {
    margin-top: 8px;
}

.flex-1 {
    flex: 1;
}

.text-sm {
    font-size: 12px;
}

.text-center {
    text-align: center;
}

/* Invite Info */
.invite-info {
    padding: 12px 16px;
    margin-bottom: 16px;
    background: var(--color-primary-light);
    border-radius: 4px;
    font-size: 13px;
    text-align: center;
}

.invite-info strong {
    color: var(--color-primary);
}

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

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.mobile-open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .top-bar-center {
        display: none;
    }

    .page-header {
        flex-wrap: wrap;
    }

    .page-actions {
        width: 100%;
        margin-top: 12px;
    }

    .table-container {
        overflow-x: auto;
    }

    .table {
        min-width: 500px;
    }
}