* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
:root {
    --bg-primary: #000; --bg-secondary: #1c1c1e; --bg-tertiary: #2c2c2e;
    --bg-card: rgba(28,28,30,0.85); --text-primary: #fff;
    --text-secondary: rgba(235,235,245,0.6); --text-tertiary: rgba(235,235,245,0.3);
    --accent-blue: #0a84ff; --accent-green: #30d158; --accent-red: #ff453a;
    --border-color: rgba(84,84,88,0.65); --radius-card: 16px; --radius-btn: 12px; --radius-input: 10px;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary); color: var(--text-primary); line-height: 1.5; min-height: 100vh; -webkit-font-smoothing: antialiased;
}
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 20px; background: linear-gradient(180deg, #000 0%, #1c1c1e 100%); }
.login-container { width: 100%; max-width: 400px; }
.login-box { background: var(--bg-card); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-radius: var(--radius-card); padding: 32px; border: 1px solid var(--border-color); }
.login-icon { font-size: 48px; text-align: center; margin-bottom: 16px; }
.login-box h1 { font-size: 24px; font-weight: 600; text-align: center; margin-bottom: 8px; }
.login-subtitle { font-size: 14px; color: var(--text-secondary); text-align: center; margin-bottom: 24px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 14px; font-weight: 500; margin-bottom: 6px; color: var(--text-secondary); }
.form-group input, .form-group textarea, .form-group select {
    width: 100%; padding: 12px 14px; background: var(--bg-tertiary); border: 1px solid var(--border-color);
    border-radius: var(--radius-input); color: var(--text-primary); font-size: 15px; font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s; -webkit-appearance: none; appearance: none;
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--accent-blue); box-shadow: 0 0 0 3px rgba(10,132,255,0.2); }
.form-group input::placeholder { color: var(--text-tertiary); }
.form-group small { display: block; font-size: 12px; color: var(--text-tertiary); margin-top: 4px; }
.btn {
    display: inline-flex; align-items: center; justify-content: center; padding: 10px 18px; border: none;
    border-radius: var(--radius-btn); font-size: 15px; font-weight: 500; font-family: inherit; cursor: pointer;
    transition: opacity 0.2s, transform 0.1s; text-decoration: none; color: var(--text-primary); background: var(--bg-tertiary);
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--accent-blue); color: #fff; }
.btn-primary:hover { opacity: 0.9; }
.btn-danger { background: var(--accent-red); color: #fff; }
.btn-ghost { background: transparent; color: var(--accent-blue); }
.btn-small { padding: 6px 12px; font-size: 13px; border-radius: 8px; }
.btn-block { width: 100%; }
.app-container { min-height: 100vh; padding-bottom: 40px; }
.app-header {
    display: flex; align-items: center; justify-content: space-between; padding: 16px 20px;
    background: rgba(0,0,0,0.8); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 100;
}
.header-left { display: flex; align-items: center; gap: 10px; }
.header-icon { font-size: 24px; }
.app-header h1 { font-size: 18px; font-weight: 600; }
.app-main { max-width: 800px; margin: 0 auto; padding: 20px; }
.stats-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 20px; }
.stat-card { background: var(--bg-card); backdrop-filter: blur(20px); border: 1px solid var(--border-color); border-radius: var(--radius-card); padding: 20px; text-align: center; }
.stat-value { font-size: 32px; font-weight: 700; color: var(--accent-blue); margin-bottom: 4px; }
.stat-label { font-size: 13px; color: var(--text-secondary); }
.action-bar { margin-bottom: 20px; }
.url-list { display: flex; flex-direction: column; gap: 12px; }
.url-card { background: var(--bg-card); backdrop-filter: blur(20px); border: 1px solid var(--border-color); border-radius: var(--radius-card); padding: 16px; transition: transform 0.2s; }
.url-card:active { transform: scale(0.99); }
.url-card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; gap: 10px; }
.short-url { color: var(--accent-blue); text-decoration: none; font-size: 15px; font-weight: 500; word-break: break-all; }
.click-badge { background: rgba(48,209,88,0.15); color: var(--accent-green); padding: 4px 10px; border-radius: 20px; font-size: 12px; font-weight: 500; white-space: nowrap; }
.long-url { font-size: 13px; color: var(--text-secondary); word-break: break-all; margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.url-card-footer { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
.url-date { font-size: 12px; color: var(--text-tertiary); }
.url-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.empty-state { text-align: center; padding: 60px 20px; color: var(--text-secondary); }
.empty-icon { font-size: 48px; margin-bottom: 16px; }
.modal {
    display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.6); backdrop-filter: blur(5px); z-index: 1000; align-items: center; justify-content: center; padding: 20px;
}
.modal.active { display: flex; }
.modal-content {
    background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: var(--radius-card);
    width: 100%; max-width: 420px; max-height: 90vh; overflow-y: auto; animation: modalIn 0.25s ease;
}
@keyframes modalIn { from { opacity: 0; transform: scale(0.95) translateY(10px); } to { opacity: 1; transform: scale(1) translateY(0); } }
.modal-header { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; border-bottom: 1px solid var(--border-color); }
.modal-header h2 { font-size: 17px; font-weight: 600; }
.modal-close { background: none; border: none; color: var(--text-secondary); font-size: 24px; cursor: pointer; padding: 0 4px; line-height: 1; }
.modal-content form { padding: 20px; }
.alert { padding: 12px 16px; border-radius: var(--radius-btn); font-size: 14px; margin-bottom: 16px; }
.alert-success { background: rgba(48,209,88,0.15); color: var(--accent-green); border: 1px solid rgba(48,209,88,0.3); }
.alert-error { background: rgba(255,69,58,0.15); color: var(--accent-red); border: 1px solid rgba(255,69,58,0.3); }
@media (max-width: 480px) {
    .stats-row { grid-template-columns: 1fr; }
    .url-card-header { flex-direction: column; align-items: flex-start; }
    .login-box { padding: 24px; }
}