/* ============================================
   N3 Store — Premium Dark Theme
   ============================================ */

:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-card: rgba(17, 24, 39, 0.7);
    --bg-card-hover: rgba(30, 41, 59, 0.8);
    --bg-sidebar: #0f1629;
    --border-color: rgba(55, 65, 81, 0.5);
    --border-light: rgba(75, 85, 99, 0.3);

    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --accent-blue: #3b82f6;
    --accent-purple: #8b5cf6;
    --accent-green: #22c55e;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;

    --gradient-primary: linear-gradient(135deg, #3b82f6, #8b5cf6);
    --gradient-green: linear-gradient(135deg, #22c55e, #16a34a);
    --gradient-orange: linear-gradient(135deg, #f59e0b, #d97706);

    --glass-bg: rgba(15, 23, 42, 0.6);
    --glass-border: rgba(99, 102, 241, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition: all 0.2s ease;
}

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

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

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(139, 92, 246, 0.06) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

a { color: var(--accent-blue); text-decoration: none; transition: var(--transition); }
a:hover { color: #60a5fa; }

code {
    background: rgba(59, 130, 246, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.85em;
    color: #93c5fd;
}

/* ---- Glass Card ---- */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
}

/* ---- Login Page ---- */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
    position: relative;
    z-index: 1;
}

.login-card {
    padding: 40px;
    animation: fadeInUp 0.5s ease;
}

.login-logo {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-top: 12px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 4px;
}

.logo-icon { display: flex; justify-content: center; }

.login-footer {
    text-align: center;
    margin-top: 20px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

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

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group select {
    width: 100%;
    padding: 10px 14px;
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: 0.95rem;
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.form-group small {
    display: block;
    margin-top: 4px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.radio-group { display: flex; gap: 16px; }
.radio-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    cursor: pointer;
}

.copy-field {
    display: flex;
    gap: 8px;
}
.copy-field input {
    flex: 1;
    font-family: 'SFMono-Regular', Consolas, monospace;
    font-size: 0.85rem;
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: rgba(30, 41, 59, 0.5);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn:hover {
    background: rgba(51, 65, 85, 0.6);
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-1px);
}

.btn-primary {
    background: var(--gradient-primary);
    border: none;
    color: white;
    font-weight: 600;
}
.btn-primary:hover {
    opacity: 0.9;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-secondary {
    background: rgba(51, 65, 85, 0.4);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}
.btn-danger:hover {
    background: rgba(239, 68, 68, 0.25);
}

.btn-full { width: 100%; justify-content: center; padding: 12px; font-size: 1rem; }
.btn-sm { padding: 4px 10px; font-size: 0.8rem; }

.sidebar-actions {
    display: flex;
    gap: 6px;
}

.btn-sidebar-btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 6px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    background: transparent;
    cursor: pointer;
    transition: var(--transition);
}
.btn-sidebar-btn:hover {
    color: var(--accent-blue);
    border-color: rgba(59, 130, 246, 0.4);
    background: rgba(59, 130, 246, 0.1);
}

.btn-logout {
    flex: 1;
    display: block;
    text-align: center;
    padding: 6px;
    font-size: 0.75rem;
    color: var(--text-muted);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}
.btn-logout:hover { color: var(--accent-red); border-color: rgba(239, 68, 68, 0.3); }

/* ---- App Layout ---- */
.app-layout {
    display: flex;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* ---- Sidebar ---- */
.sidebar {
    width: 240px;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 10;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 20px;
    border-bottom: 1px solid var(--border-light);
}

.sidebar-title {
    font-size: 1.1rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-nav {
    list-style: none;
    padding: 12px 8px;
    flex: 1;
}

.sidebar-nav li a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.sidebar-nav li a:hover {
    background: rgba(59, 130, 246, 0.1);
    color: var(--text-primary);
}

.sidebar-nav li.active a {
    background: rgba(59, 130, 246, 0.15);
    color: var(--accent-blue);
}

.nav-icon { font-size: 1.1rem; }

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border-light);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
}

.user-email {
    font-size: 0.8rem;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 140px;
}

/* ---- Main Content ---- */
.main-content {
    flex: 1;
    margin-left: 240px;
    padding: 24px 32px;
    min-height: 100vh;
}

.top-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
}

.top-bar h2 {
    font-size: 1.5rem;
    font-weight: 700;
}

.top-bar-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.breadcrumb {
    display: inline-block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}
.breadcrumb:hover { color: var(--accent-blue); }

.cluster-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}
.cluster-badge.leader {
    background: rgba(34, 197, 94, 0.15);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: #86efac;
}
.cluster-badge.follower {
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: #93c5fd;
}
.node-id {
    font-family: monospace;
    font-size: 0.75rem;
    opacity: 0.7;
}

/* ---- Stats Grid ---- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    transition: var(--transition);
}
.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    flex-shrink: 0;
}

.stat-value {
    display: block;
    font-size: 1.6rem;
    font-weight: 700;
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ---- Tables ---- */
.table-container {
    overflow-x: auto;
    padding: 0;
}

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

thead th {
    text-align: left;
    padding: 14px 18px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-light);
}

tbody td {
    padding: 12px 18px;
    font-size: 0.9rem;
    border-bottom: 1px solid rgba(55, 65, 81, 0.2);
}

tbody tr { transition: var(--transition); }
tbody tr:hover { background: rgba(59, 130, 246, 0.05); }
tbody tr:last-child td { border-bottom: none; }

.bucket-link { font-weight: 500; }
.key-cell { font-family: monospace; font-size: 0.85rem; }
.direct-url-link { color: var(--accent-blue); text-decoration: none; transition: var(--transition); }
.direct-url-link:hover { text-decoration: underline; color: #60a5fa; }
.checksum { font-size: 0.75rem; }
.actions-cell { display: flex; gap: 6px; }

/* ---- Badges ---- */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: capitalize;
}
.badge-green { background: rgba(34, 197, 94, 0.15); color: #86efac; }
.badge-orange { background: rgba(245, 158, 11, 0.15); color: #fcd34d; }
.badge-blue { background: rgba(59, 130, 246, 0.15); color: #93c5fd; }
.badge-red { background: rgba(239, 68, 68, 0.15); color: #fca5a5; }

.badge-btn {
    cursor: pointer;
    border: none;
    font-family: var(--font-family);
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: capitalize;
    transition: var(--transition);
}
.badge-btn:hover { transform: scale(1.05); }

/* ---- Section ---- */
.section {
    margin-bottom: 28px;
}
.section h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-secondary);
}

/* ---- Empty State ---- */
.empty-state {
    text-align: center;
    padding: 60px 20px;
}
.empty-icon { font-size: 3rem; display: block; margin-bottom: 16px; }
.empty-state h3 { font-size: 1.2rem; margin-bottom: 8px; }
.empty-state p { color: var(--text-muted); margin-bottom: 20px; }

/* ---- Modal ---- */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal.hidden { display: none; }

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 480px;
    padding: 32px;
    animation: fadeInUp 0.3s ease;
}

.modal-content h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 24px;
}

/* ---- Upload Drop Zone ---- */
.drop-zone {
    text-align: center;
    padding: 32px;
    margin-bottom: 24px;
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    cursor: pointer;
}
.drop-zone:hover,
.drop-zone.dragover {
    border-color: var(--accent-blue);
    background: rgba(59, 130, 246, 0.05);
}
.drop-icon { font-size: 2rem; display: block; margin-bottom: 8px; }
.drop-zone p { color: var(--text-secondary); font-size: 0.9rem; }

.upload-btn {
    cursor: pointer;
}
.upload-btn input { display: none; }

.upload-progress { margin-top: 16px; }
.progress-bar {
    height: 6px;
    background: rgba(55, 65, 81, 0.5);
    border-radius: 3px;
    overflow: hidden;
}
.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 3px;
    width: 0%;
    transition: width 0.3s ease;
}
#progress-text {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 6px;
}

/* ---- New Key Display ---- */
.new-key-display {
    padding: 24px;
    margin-bottom: 24px;
}

/* ---- Pre-sign Result ---- */
.presign-result {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-light);
}

/* ---- Alerts ---- */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    margin-bottom: 16px;
}
.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}
.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: #fcd34d;
}
.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: #86efac;
}

/* ---- Toast ---- */
#toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 200;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 12px 20px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    backdrop-filter: blur(20px);
    animation: slideIn 0.3s ease, fadeOut 0.3s ease 2.7s;
    min-width: 250px;
}
.toast-success { background: rgba(34, 197, 94, 0.2); border: 1px solid rgba(34, 197, 94, 0.4); color: #86efac; }
.toast-error { background: rgba(239, 68, 68, 0.2); border: 1px solid rgba(239, 68, 68, 0.4); color: #fca5a5; }
.toast-info { background: rgba(59, 130, 246, 0.2); border: 1px solid rgba(59, 130, 246, 0.4); color: #93c5fd; }

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

.hidden { display: none !important; }

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: rgba(75, 85, 99, 0.4);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover { background: rgba(75, 85, 99, 0.6); }

/* ---- Animations ---- */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes slideIn {
    from { opacity: 0; transform: translateX(40px); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .sidebar { width: 60px; }
    .sidebar-title, .sidebar-nav li a span:not(.nav-icon),
    .sidebar-footer, .user-email { display: none; }
    .sidebar-header { justify-content: center; padding: 12px; }
    .sidebar-nav li a { justify-content: center; padding: 12px; }
    .main-content { margin-left: 60px; padding: 16px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}