/* ==================== RESET & BASE ==================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg-primary: #0f1117;
    --bg-secondary: #181b24;
    --bg-card: #1e2230;
    --bg-card-hover: #252a3a;
    --border-color: #2d3344;
    --text-primary: #e4e7ef;
    --text-secondary: #8b92a8;
    --text-muted: #5a6178;
    --accent: #4f7cff;
    --accent-hover: #3a63d8;
    --accent-light: rgba(79, 124, 255, 0.12);
    --success: #2ed573;
    --success-light: rgba(46, 213, 115, 0.12);
    --danger: #ff4757;
    --danger-light: rgba(255, 71, 87, 0.12);
    --warning: #ffa502;
    --warning-light: rgba(255, 165, 2, 0.12);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.2s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

.app-container { max-width: 1200px; margin: 0 auto; padding: 0 20px 40px; }

/* ==================== AUTH OVERLAY ==================== */
.auth-overlay {
    position: fixed; inset: 0;
    background: var(--bg-primary);
    display: flex; align-items: center; justify-content: center;
    z-index: 9999; padding: 20px;
}
.auth-card {
    width: 100%; max-width: 420px;
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: var(--radius); padding: 36px 32px;
}
.auth-logo {
    width: 64px; height: 64px; margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--accent), #7c5cff);
    border-radius: 16px; display: flex; align-items: center; justify-content: center; color: #fff;
}
.auth-card h2 { text-align: center; font-size: 24px; font-weight: 700; margin-bottom: 4px; }
.auth-sub { text-align: center; font-size: 14px; color: var(--text-secondary); margin-bottom: 24px; }
.auth-tabs {
    display: flex; gap: 4px; margin-bottom: 20px;
    background: var(--bg-secondary); border-radius: var(--radius-sm); padding: 4px;
}
.auth-tab {
    flex: 1; padding: 10px; border: none; border-radius: 6px;
    background: transparent; color: var(--text-secondary);
    font-size: 14px; font-weight: 500; cursor: pointer; transition: var(--transition); font-family: inherit;
}
.auth-tab.active { background: var(--accent); color: #fff; }

/* ==================== HEADER ==================== */
.app-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 24px 0; border-bottom: 1px solid var(--border-color); margin-bottom: 24px;
}
.header-left { display: flex; align-items: center; gap: 14px; }
.logo-icon {
    width: 48px; height: 48px;
    background: linear-gradient(135deg, var(--accent), #7c5cff);
    border-radius: var(--radius); display: flex; align-items: center; justify-content: center; color: #fff;
}
.app-header h1 { font-size: 22px; font-weight: 700; letter-spacing: -0.5px; }
.header-subtitle { font-size: 13px; color: var(--text-secondary); }
.user-badge { display: flex; align-items: center; gap: 10px; }
.user-badge span {
    font-size: 14px; font-weight: 500; color: var(--text-primary);
    padding: 8px 14px; background: var(--bg-card); border-radius: 100px; border: 1px solid var(--border-color);
}
.admin-tag {
    background: var(--warning-light) !important;
    color: var(--warning) !important;
    border: 1px solid rgba(255, 165, 2, 0.3) !important;
    font-size: 11px !important; font-weight: 700 !important;
    padding: 4px 10px !important;
}

/* ==================== TABS ==================== */
.tab-nav {
    display: flex; gap: 4px; margin-bottom: 24px;
    background: var(--bg-secondary); border: 1px solid var(--border-color);
    border-radius: var(--radius); padding: 6px;
}
.tab-btn {
    flex: 1; display: flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 16px; background: transparent; border: none; border-radius: var(--radius-sm);
    color: var(--text-secondary); font-size: 14px; font-weight: 500; cursor: pointer;
    transition: var(--transition); font-family: inherit;
}
.tab-btn:hover { color: var(--text-primary); background: var(--bg-card-hover); }
.tab-btn.active { background: var(--accent); color: #fff; box-shadow: 0 2px 8px rgba(79, 124, 255, 0.3); }
.tab-content { display: none; }
.tab-content.active { display: block; animation: fadeIn 0.3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* ==================== INFO CARDS ==================== */
.info-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px; margin-bottom: 24px;
}
.info-card {
    display: flex; gap: 14px; padding: 20px;
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: var(--radius); transition: var(--transition);
}
.info-card:hover { background: var(--bg-card-hover); border-color: var(--accent); }
.card-icon {
    width: 44px; height: 44px; border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.clock-icon { background: var(--accent-light); color: var(--accent); }
.ip-icon { background: var(--success-light); color: var(--success); }
.key-icon { background: var(--warning-light); color: var(--warning); }
.timer-icon { background: rgba(124, 92, 255, 0.12); color: #7c5cff; }
.card-body { flex: 1; min-width: 0; }
.card-body label { font-size: 12px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px; font-weight: 500; }
.card-value { font-size: 20px; font-weight: 700; margin-top: 4px; word-break: break-all; }
.card-sub { font-size: 13px; color: var(--text-muted); margin-top: 2px; }

/* ==================== SECTION BLOCK ==================== */
.section-block { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius); padding: 20px; }
.section-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.section-header h2 { font-size: 16px; font-weight: 600; }

/* ==================== TABLE ==================== */
.table-wrapper { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table th {
    text-align: left; padding: 12px 14px; color: var(--text-secondary); font-weight: 500;
    font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color); white-space: nowrap;
}
.data-table td { padding: 12px 14px; border-bottom: 1px solid var(--border-color); color: var(--text-primary); }
.data-table tbody tr { transition: var(--transition); }
.data-table tbody tr:hover { background: var(--bg-card-hover); }
.data-table .empty-row { text-align: center; color: var(--text-muted); padding: 32px 14px; font-style: italic; }
.badge { display: inline-block; padding: 4px 10px; border-radius: 100px; font-size: 12px; font-weight: 500; }
.badge-active { background: var(--success-light); color: var(--success); }
.badge-expired { background: var(--danger-light); color: var(--danger); }
.key-cell { font-family: 'Courier New', monospace; font-size: 13px; color: var(--accent); }
.link-cell { font-family: 'Courier New', monospace; font-size: 12px; color: var(--success); }

/* ==================== BUTTONS ==================== */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 10px 20px; border: none; border-radius: var(--radius-sm);
    font-size: 14px; font-weight: 600; cursor: pointer; transition: var(--transition);
    font-family: inherit; text-decoration: none;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(79, 124, 255, 0.3); }
.btn-secondary { background: var(--bg-card-hover); color: var(--text-primary); border: 1px solid var(--border-color); }
.btn-secondary:hover { background: var(--border-color); }
.btn-danger { background: var(--danger-light); color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-lg { padding: 16px 24px; font-size: 16px; }
.btn-block { width: 100%; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; }

/* ==================== FORMS ==================== */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 500; color: var(--text-secondary); margin-bottom: 6px; }
.form-input {
    width: 100%; padding: 12px 16px; background: var(--bg-secondary);
    border: 1px solid var(--border-color); border-radius: var(--radius-sm);
    color: var(--text-primary); font-size: 14px; font-family: inherit; transition: var(--transition);
}
.form-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-light); }
.form-input::placeholder { color: var(--text-muted); }

/* ==================== LINK CREATE TAB ==================== */
.link-create-container { display: grid; grid-template-columns: 1fr 1.5fr; gap: 20px; }
@media (max-width: 768px) {
    .link-create-container { grid-template-columns: 1fr; }
    .authorize-container { grid-template-columns: 1fr !important; }
}
.create-card {
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: var(--radius); padding: 24px;
}
.create-card h2 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.form-desc { font-size: 13px; color: var(--text-secondary); margin-bottom: 20px; }
.result-box { margin-top: 16px; padding: 16px; border-radius: var(--radius-sm); font-size: 14px; animation: fadeIn 0.3s ease; }
.result-success { background: var(--success-light); border: 1px solid rgba(46, 213, 115, 0.3); color: var(--success); }
.result-error { background: var(--danger-light); border: 1px solid rgba(255, 71, 87, 0.3); color: var(--danger); }
.result-box .short-url {
    display: block; margin-top: 8px; padding: 10px 14px; background: var(--bg-secondary);
    border-radius: var(--radius-sm); font-family: 'Courier New', monospace; font-size: 14px;
    color: var(--accent); word-break: break-all; cursor: pointer;
}
.result-box .short-url:hover { text-decoration: underline; }

/* ==================== RECENT KEYS ==================== */
.recent-keys-list { max-height: 600px; overflow-y: auto; }
.recent-key-item {
    padding: 14px; background: var(--bg-secondary); border: 1px solid var(--border-color);
    border-radius: var(--radius-sm); margin-bottom: 10px;
}
.recent-key-item .rk-key {
    font-family: 'Courier New', monospace; font-size: 14px; color: var(--accent); font-weight: 600;
}
.recent-key-item .rk-link {
    display: block; margin-top: 8px; font-family: 'Courier New', monospace; font-size: 12px;
    color: var(--success); word-break: break-all; cursor: pointer; padding: 8px 10px;
    background: var(--bg-primary); border-radius: 6px;
}
.recent-key-item .rk-link:hover { text-decoration: underline; }
.recent-key-item .rk-info { font-size: 12px; color: var(--text-muted); margin-top: 8px; }
.recent-key-item .rk-actions { display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
.empty-text { color: var(--text-muted); font-style: italic; text-align: center; padding: 20px; }

/* ==================== AUTHORIZE TAB ==================== */
.authorize-container { display: grid; grid-template-columns: 1fr; gap: 20px; max-width: 500px; margin: 0 auto; }
.authorize-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius); padding: 24px; }
.authorize-card h2 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.ip-display { margin-bottom: 20px; }
.ip-box {
    padding: 16px; background: var(--bg-secondary); border: 1px solid var(--border-color);
    border-radius: var(--radius-sm); text-align: center;
}
.ip-box label { font-size: 12px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px; }
.ip-value { font-size: 24px; font-weight: 800; color: var(--accent); margin-top: 4px; font-family: 'Courier New', monospace; }

/* ==================== API HINT (admin only) ==================== */
.api-hint {
    margin-top: 16px; padding: 16px; background: var(--bg-secondary);
    border: 1px dashed var(--border-color); border-radius: var(--radius-sm);
}
.api-hint label { font-size: 12px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px; display: block; margin-bottom: 8px; }
.api-hint code {
    display: block; padding: 8px 12px; background: var(--bg-primary); border-radius: 6px;
    font-size: 13px; color: var(--accent); word-break: break-all; font-family: 'Courier New', monospace;
}
.api-return { margin-top: 8px; font-size: 12px; color: var(--text-secondary); }
.api-return code { display: inline; padding: 2px 6px; font-size: 12px; }
.code-block {
    display: block; padding: 12px; background: var(--bg-primary); border-radius: 6px;
    font-size: 12px; color: var(--text-primary); font-family: 'Courier New', monospace;
    white-space: pre-wrap; word-break: break-all; margin-top: 8px;
}

/* ==================== ADMIN ONLY ==================== */
.admin-only { display: none; }
.admin-only.visible { display: block; }

/* ==================== FOOTER ==================== */
.app-footer { margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--border-color); text-align: center; font-size: 13px; color: var(--text-muted); }

/* ==================== SCROLLBAR ==================== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }