/* =============================================
   ZeroPayment v2.0 — Dark Glassmorphism CSS
   ============================================= */

/* ---------- CSS Variables ---------- */
:root {
    --bg-dark:        #09090b;
    --sidebar-bg:     #111113;
    --card-bg:        rgba(24, 24, 27, 0.7);
    --card-border:    rgba(255, 255, 255, 0.07);
    --accent:         #6366f1;
    --accent-light:   #818cf8;
    --accent-glow:    rgba(99, 102, 241, 0.25);
    --success:        #10b981;
    --warning:        #f59e0b;
    --danger:         #ef4444;
    --text-primary:   #fafafa;
    --text-secondary: #71717a;
    --sidebar-width:  240px;
    --radius-sm:      8px;
    --radius-md:      12px;
    --radius-lg:      18px;
    --transition:     0.2s ease;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    font-size: 14px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }

/* ---------- Layout: Sidebar ---------- */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--card-border);
    display: flex;
    flex-direction: column;
    z-index: 100;
    overflow-y: auto;
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 4px; }

/* Sidebar Brand */
.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 20px 20px 16px;
    border-bottom: 1px solid var(--card-border);
    font-family: 'Outfit', sans-serif;
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.sidebar-brand strong { color: var(--accent-light); }

.sidebar-logo {
    width: 36px;
    height: 36px;
    background: var(--accent-glow);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-light);
    flex-shrink: 0;
    border: 1px solid rgba(99,102,241,0.35);
}

/* Sidebar Nav */
.sidebar-nav {
    flex: 1;
    padding: 12px 10px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 13.5px;
    font-weight: 500;
    transition: background var(--transition), color var(--transition);
    position: relative;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--accent-glow);
    color: var(--accent-light);
    border: 1px solid rgba(99,102,241,0.3);
}

.nav-item.active svg { color: var(--accent-light); }

.nav-item svg { flex-shrink: 0; }

/* Sidebar Footer */
.sidebar-footer {
    padding: 14px 14px;
    border-top: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    min-width: 0;
}

.user-avatar {
    width: 34px;
    height: 34px;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    color: white;
    flex-shrink: 0;
}

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

.user-name {
    font-weight: 600;
    font-size: 13px;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-size: 11px;
    color: var(--text-secondary);
}

.sidebar-logout {
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    transition: background var(--transition), color var(--transition);
    flex-shrink: 0;
}

.sidebar-logout:hover {
    background: rgba(239,68,68,0.1);
    color: var(--danger);
}

/* ---------- Layout: Main Content ---------- */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.page-header {
    padding: 28px 32px 0;
    border-bottom: 1px solid var(--card-border);
    margin-bottom: 0;
}

.page-header-inner {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
}

.page-title {
    font-family: 'Outfit', sans-serif;
    font-size: 26px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.page-subtitle {
    font-size: 13.5px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.page-body {
    padding: 28px 32px;
    flex: 1;
}

/* ---------- Stats Grid ---------- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 18px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 22px 24px;
    backdrop-filter: blur(12px);
    position: relative;
    overflow: hidden;
    transition: transform var(--transition), border-color var(--transition);
}

.stat-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255,255,255,0.12);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: -30px;
    right: -30px;
    width: 90px;
    height: 90px;
    border-radius: 50%;
    opacity: 0.15;
    transition: opacity var(--transition);
}

.stat-card:hover::before { opacity: 0.25; }

.stat-card.green::before  { background: var(--success); box-shadow: 0 0 40px var(--success); }
.stat-card.blue::before   { background: var(--accent);  box-shadow: 0 0 40px var(--accent);  }
.stat-card.yellow::before { background: var(--warning); box-shadow: 0 0 40px var(--warning); }
.stat-card.red::before    { background: var(--danger);  box-shadow: 0 0 40px var(--danger);  }

.stat-label {
    font-size: 11.5px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 10px;
}

.stat-value {
    font-family: 'Outfit', sans-serif;
    font-size: 30px;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
    letter-spacing: -1px;
}

.stat-icon {
    position: absolute;
    top: 22px;
    right: 22px;
    color: var(--text-secondary);
    opacity: 0.4;
}

/* ---------- Card ---------- */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    backdrop-filter: blur(12px);
    margin-bottom: 20px;
    transition: border-color var(--transition);
}

.card:hover { border-color: rgba(255,255,255,0.1); }

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
    flex-wrap: wrap;
    gap: 12px;
}

.card-title {
    font-family: 'Outfit', sans-serif;
    font-size: 17px;
    font-weight: 700;
    color: var(--text-primary);
}

.card-desc {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 9px 18px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: 'Inter', sans-serif;
    font-size: 13.5px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
    background: var(--accent);
    color: white;
    box-shadow: 0 4px 15px var(--accent-glow);
}
.btn-primary:hover {
    background: var(--accent-light);
    box-shadow: 0 6px 20px var(--accent-glow);
    color: white;
}

.btn-success {
    background: var(--success);
    color: white;
    box-shadow: 0 4px 15px rgba(16,185,129,0.3);
}
.btn-success:hover { background: #0ea572; color: white; }

.btn-danger {
    background: var(--danger);
    color: white;
    box-shadow: 0 4px 12px rgba(239,68,68,0.3);
}
.btn-danger:hover { background: #dc2626; color: white; }

.btn-ghost {
    background: rgba(255,255,255,0.06);
    color: var(--text-secondary);
    border: 1px solid var(--card-border);
}
.btn-ghost:hover {
    background: rgba(255,255,255,0.1);
    color: var(--text-primary);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12.5px;
    border-radius: var(--radius-sm);
}

/* ---------- Badges ---------- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 99px;
    font-size: 11.5px;
    font-weight: 700;
    letter-spacing: 0.3px;
    white-space: nowrap;
}

.badge-success { background: rgba(16,185,129,0.15); color: #34d399; border: 1px solid rgba(16,185,129,0.25); }
.badge-warning { background: rgba(245,158,11,0.15); color: #fbbf24; border: 1px solid rgba(245,158,11,0.25); }
.badge-danger  { background: rgba(239,68,68,0.12);  color: #f87171; border: 1px solid rgba(239,68,68,0.2);  }
.badge-info    { background: rgba(99,102,241,0.15);  color: var(--accent-light); border: 1px solid rgba(99,102,241,0.3); }
.badge-neutral { background: rgba(113,113,122,0.2);  color: #a1a1aa; border: 1px solid rgba(113,113,122,0.2); }

/* ---------- Alerts ---------- */
.alert {
    padding: 13px 16px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 18px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.alert-success { background: rgba(16,185,129,0.1);  color: #34d399; border: 1px solid rgba(16,185,129,0.25); }
.alert-danger  { background: rgba(239,68,68,0.09);  color: #f87171; border: 1px solid rgba(239,68,68,0.2);  }
.alert-info    { background: rgba(99,102,241,0.1);  color: var(--accent-light); border: 1px solid rgba(99,102,241,0.25); }
.alert-warning { background: rgba(245,158,11,0.1);  color: #fbbf24; border: 1px solid rgba(245,158,11,0.25); }

/* ---------- Tables ---------- */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--card-border);
}

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

table th {
    background: rgba(0,0,0,0.3);
    padding: 11px 16px;
    font-size: 11.5px;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    font-weight: 700;
    color: var(--text-secondary);
    text-align: left;
    white-space: nowrap;
    border-bottom: 1px solid var(--card-border);
}

table td {
    padding: 12px 16px;
    font-size: 13.5px;
    color: var(--text-primary);
    border-bottom: 1px solid rgba(255,255,255,0.04);
    vertical-align: middle;
}

table tr:last-child td { border-bottom: none; }

table tbody tr { transition: background var(--transition); }
table tbody tr:hover { background: rgba(255,255,255,0.025); }

/* ---------- Form Elements ---------- */
.form-group { margin-bottom: 18px; }

label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="url"],
input[type="number"],
input[type="tel"],
input[type="color"],
textarea,
select {
    width: 100%;
    padding: 11px 14px;
    background: rgba(0,0,0,0.4);
    color: var(--text-primary);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}

input:focus,
textarea:focus,
select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

input::placeholder,
textarea::placeholder { color: rgba(113,113,122,0.6); }

select { appearance: none; }

textarea { resize: vertical; min-height: 80px; }

/* ---------- API Key Box ---------- */
.api-key-box {
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    font-size: 13px;
    background: rgba(0,0,0,0.5);
    border: 1px dashed rgba(99,102,241,0.4);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    color: var(--accent-light);
    word-break: break-all;
    line-height: 1.8;
    letter-spacing: 0.5px;
    margin: 12px 0;
}

/* ---------- Code Block ---------- */
.code-block {
    background: rgba(0,0,0,0.6);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: 18px 20px;
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    font-size: 12.5px;
    color: #e2e8f0;
    overflow-x: auto;
    white-space: pre-wrap;
    line-height: 1.9;
    position: relative;
}

.code-block .comment { color: #6b7280; }
.code-block .key     { color: #818cf8; }
.code-block .string  { color: #34d399; }
.code-block .number  { color: #f59e0b; }

/* ---------- Auth Pages ---------- */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-dark);
    background-image:
        radial-gradient(ellipse at 20% 50%, rgba(99,102,241,0.12) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 20%, rgba(139,92,246,0.08) 0%, transparent 50%);
    padding: 20px;
}

.auth-box {
    width: 100%;
    max-width: 420px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 36px 32px;
    backdrop-filter: blur(16px);
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.6);
}

.auth-logo {
    text-align: center;
    margin-bottom: 28px;
    display: flex;
    justify-content: center;
}

.auth-logo img {
    width: 84px;
    height: 84px;
    filter: drop-shadow(0 0 15px rgba(99, 102, 241, 0.4));
}

.auth-logo .brand {
    font-family: 'Outfit', sans-serif;
    font-size: 26px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.auth-logo .brand span { color: var(--accent-light); }

.auth-subtitle {
    color: var(--text-secondary);
    font-size: 13px;
    margin-top: 4px;
}

.auth-box h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 6px;
}

/* ---------- Receipt (Verify Page) ---------- */
.receipt {
    background: white;
    color: #18181b;
    border-radius: 20px;
    padding: 36px 28px;
    margin-top: 30px;
    box-shadow: 0 20px 60px -10px rgba(0,0,0,0.6);
    position: relative;
    overflow: hidden;
}

.receipt::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--success), #34d399);
}

.receipt-dashed-line {
    border: none;
    border-top: 2px dashed #e4e4e7;
    margin: 22px 0;
}

/* ---------- Status Filter Tabs ---------- */
.filter-tabs {
    display: flex;
    gap: 4px;
    background: rgba(0,0,0,0.3);
    padding: 4px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--card-border);
    flex-wrap: wrap;
}

.filter-tab {
    padding: 7px 16px;
    border-radius: calc(var(--radius-sm) - 2px);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all var(--transition);
    cursor: pointer;
    white-space: nowrap;
    border: none;
    background: none;
}

.filter-tab:hover { color: var(--text-primary); background: rgba(255,255,255,0.05); }

.filter-tab.active {
    background: var(--accent);
    color: white;
    box-shadow: 0 2px 8px var(--accent-glow);
}

/* ---------- Settings Sections ---------- */
.settings-section {
    margin-bottom: 30px;
}

.settings-section-title {
    font-family: 'Outfit', sans-serif;
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ---------- Endpoint Table (Developers) ---------- */
.endpoint-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.method-pill {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 6px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    font-weight: 700;
    min-width: 52px;
    justify-content: center;
}

.method-pill.get  { background: rgba(16,185,129,0.15); color: #34d399; border: 1px solid rgba(16,185,129,0.3); }
.method-pill.post { background: rgba(99,102,241,0.15); color: var(--accent-light); border: 1px solid rgba(99,102,241,0.3); }

/* ---------- Checkout Page ---------- */
.checkout-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f4f4f5;
    padding: 30px 16px;
}

.checkout-box {
    width: 100%;
    max-width: 480px;
    background: white;
    color: #18181b;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 25px 60px -12px rgba(0,0,0,0.25);
}

.checkout-header {
    padding: 28px 30px;
    text-align: center;
    color: white;
}

.checkout-body { padding: 32px 28px; }

.checkout-method-card {
    background: #f8f8f9;
    border: 1px solid #e4e4e7;
    padding: 16px 18px;
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* ---------- Countdown Timer ---------- */
.countdown-wrap {
    background: rgba(245,158,11,0.08);
    border: 1px solid rgba(245,158,11,0.25);
    border-radius: var(--radius-md);
    padding: 10px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: #fbbf24;
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 18px;
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.18); }

/* ---------- Utility ---------- */
.text-muted    { color: var(--text-secondary); }
.text-accent   { color: var(--accent-light); }
.text-success  { color: var(--success); }
.text-danger   { color: var(--danger); }
.text-warning  { color: var(--warning); }
.mono          { font-family: 'JetBrains Mono', monospace; }
.flex          { display: flex; }
.flex-between  { display: flex; align-items: center; justify-content: space-between; }
.gap-2         { gap: 8px; }
.gap-3         { gap: 12px; }
.gap-4         { gap: 16px; }
.mt-1          { margin-top: 4px; }
.mt-2          { margin-top: 8px; }
.mt-3          { margin-top: 12px; }
.mt-4          { margin-top: 16px; }
.mb-4          { margin-bottom: 16px; }
.mb-6          { margin-bottom: 24px; }
.w-full        { width: 100%; }

/* ---------- Section Divider ---------- */
.section-divider {
    border: none;
    border-top: 1px solid var(--card-border);
    margin: 28px 0;
}

/* ---------- Chart Container ---------- */
.chart-container {
    position: relative;
    height: 280px;
    width: 100%;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .main-content { margin-left: 0; }
    .page-body { padding: 20px 16px; }
    .page-header { padding: 20px 16px 0; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .auth-box { padding: 24px 20px; }
}