:root {
--bg: #f4f7fb;
--bg-alt: #eaf0f7;
--bg-card: #ffffff;
--bg-card-hover: #f8fafc;
--surface: rgba(72,152,200,0.06);
--surface-hover: rgba(72,152,200,0.1);
--border: rgba(72,152,200,0.15);
--border-hover: rgba(72,152,200,0.3);
--neon: #4898c8;
--neon-rgb: 72, 152, 200;
--accent-red: #c82828;
--accent-red-rgb: 200, 40, 40;
--accent-blue-light: #78b8e8;
--text-primary: #1a2a3a;
--text-secondary: rgba(26,42,58,0.65);
--text-muted: rgba(26,42,58,0.4);
--danger: #c82828;
--danger-rgb: 200, 40, 40;
--success: #27ae60;
--warning: #ffab00;
--radius: 8px;
--radius-card: 12px;
--shadow-card: 0 2px 12px rgba(6,17,30,0.08);
--shadow-card-hover: 0 8px 32px rgba(6,17,30,0.12);
--font-display: 'Oswald', sans-serif;
--font-body: 'Inter', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
font-family: var(--font-body);
color: var(--text-primary);
background: var(--bg);
line-height: 1.6;
-webkit-text-size-adjust: 100%;
}

h1, h2, h3 {
font-family: var(--font-display);
text-transform: uppercase;
letter-spacing: 1.5px;
}

.hamburger {
display: flex;
flex-direction: column;
gap: 5px;
background: none;
border: none;
cursor: pointer;
padding: 8px;
z-index: 101;
}

.hamburger span {
display: block;
width: 24px;
height: 2px;
background: var(--text-primary);
border-radius: 2px;
transition: transform 0.3s, opacity 0.3s;
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== LOGIN ===== */
.login-body {
background: var(--bg);
min-height: 100vh;
display: flex;
align-items: center;
justify-content: center;
padding: 16px;
position: relative;
overflow: hidden;
}

.login-body::before {
content: '';
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
width: 500px;
height: 500px;
background: radial-gradient(circle, rgba(var(--neon-rgb), 0.08) 0%, rgba(var(--accent-red-rgb), 0.04) 50%, transparent 70%);
pointer-events: none;
}

.login-wrapper {
width: 100%;
max-width: 400px;
position: relative;
z-index: 2;
}

.login-card {
background: var(--bg-card);
backdrop-filter: blur(12px);
-webkit-backdrop-filter: blur(12px);
border: 1px solid var(--border);
padding: 32px 24px;
border-radius: var(--radius-card);
text-align: center;
box-shadow: var(--shadow-card);
}

.login-logo {
height: 32px;
margin-bottom: 16px;
}

.login-card h1 {
font-size: 1.1rem;
color: var(--text-primary);
margin-bottom: 4px;
letter-spacing: 2px;
}

.login-card p {
font-size: 12px;
color: var(--text-muted);
margin-bottom: 24px;
}

.login-form .form-group {
margin-bottom: 14px;
text-align: left;
}

.login-form label {
display: block;
font-family: var(--font-display);
font-weight: 500;
font-size: 11px;
color: var(--text-secondary);
margin-bottom: 6px;
letter-spacing: 1.5px;
text-transform: uppercase;
}

.login-form input {
width: 100%;
padding: 14px 12px;
border: 1px solid var(--border);
border-radius: var(--radius);
font-size: 16px;
font-family: var(--font-body);
color: var(--text-primary);
background: var(--bg-card);
-webkit-appearance: none;
}

.login-form input:focus {
outline: none;
border-color: var(--neon);
box-shadow: 0 0 0 3px rgba(var(--neon-rgb), 0.1);
}

.btn-login {
width: 100%;
padding: 14px;
background: var(--neon);
color: #fff;
border: none;
border-radius: 50px;
font-size: 14px;
font-family: var(--font-display);
font-weight: 700;
letter-spacing: 2px;
text-transform: uppercase;
cursor: pointer;
margin-top: 8px;
-webkit-tap-highlight-color: transparent;
transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
box-shadow: 0 4px 16px rgba(var(--neon-rgb), 0.25);
}

.btn-login:hover {
transform: translateY(-2px);
background: #5aaad8;
box-shadow: 0 6px 24px rgba(var(--neon-rgb), 0.35);
}

.login-error {
color: var(--danger);
font-size: 13px;
margin-top: 12px;
}

/* ===== ADMIN DASHBOARD ===== */
.admin-body { background: var(--bg); }

.admin-header {
background: rgba(255,255,255,0.92);
backdrop-filter: blur(12px);
-webkit-backdrop-filter: blur(12px);
padding: 0 16px;
position: sticky;
top: 0;
z-index: 100;
border-bottom: 1px solid var(--border);
}

.admin-header-inner {
max-width: 1200px;
margin: 0 auto;
display: flex;
align-items: center;
justify-content: space-between;
height: 52px;
position: relative;
}

.admin-brand {
display: flex;
align-items: center;
gap: 10px;
}

.admin-logo {
height: 28px;
}

.admin-title {
color: var(--text-primary);
font-family: var(--font-display);
font-weight: 600;
font-size: 13px;
letter-spacing: 1.5px;
}

.admin-nav {
display: none;
position: absolute;
top: 100%;
left: 0;
right: 0;
background: rgba(255,255,255,0.98);
backdrop-filter: blur(12px);
padding: 8px 16px 16px;
border-bottom: 1px solid var(--border);
flex-direction: column;
gap: 0;
}

.admin-nav.open { display: flex; }

.nav-link {
color: var(--text-secondary);
text-decoration: none;
font-size: 13px;
font-family: var(--font-display);
font-weight: 500;
letter-spacing: 1px;
text-transform: uppercase;
padding: 12px 0;
border-bottom: 1px solid var(--border);
border-radius: 0;
transition: color 0.2s;
}

.nav-link:last-of-type { border-bottom: none; }

.nav-link:hover, .nav-link.active {
color: var(--neon);
}

.btn-logout {
margin-top: 8px;
padding: 10px 14px;
background: rgba(var(--danger-rgb), 0.08);
border: 1px solid rgba(var(--danger-rgb), 0.2);
color: var(--danger);
border-radius: var(--radius);
font-size: 13px;
font-family: var(--font-display);
font-weight: 500;
letter-spacing: 1px;
cursor: pointer;
width: 100%;
transition: all 0.2s;
-webkit-tap-highlight-color: transparent;
}

.btn-logout:hover { background: rgba(var(--danger-rgb), 0.15); color: var(--danger); }

.admin-main {
max-width: 1200px;
margin: 0 auto;
padding: 16px;
}

.section { display: none; }
.section.active { display: block; }

.section h2 {
font-size: 1.3rem;
color: var(--text-primary);
margin-bottom: 16px;
letter-spacing: 2px;
}

.section-desc {
color: var(--text-muted);
font-size: 13px;
margin-bottom: 12px;
}

/* Stats Cards */
.stats-cards {
display: grid;
grid-template-columns: 1fr;
gap: 12px;
margin-bottom: 16px;
}

.stat-card {
background: var(--bg-card);
border: 1px solid var(--border);
padding: 20px 16px;
border-radius: var(--radius-card);
text-align: center;
transition: border-color 0.2s, box-shadow 0.2s;
box-shadow: var(--shadow-card);
}

.stat-card:hover {
border-color: rgba(var(--neon-rgb), 0.3);
box-shadow: var(--shadow-card-hover);
}

.stat-number {
font-family: var(--font-display);
font-size: 2.4rem;
font-weight: 700;
margin-bottom: 2px;
letter-spacing: 2px;
}

.stat-total .stat-number { color: var(--neon); }
.stat-confirmed .stat-number { color: var(--accent-blue-light); }
.stat-delivered .stat-number { color: var(--success); }
.stat-pending .stat-number { color: var(--warning); }

.stat-label {
font-size: 11px;
color: var(--text-muted);
font-family: var(--font-display);
font-weight: 500;
letter-spacing: 1.5px;
text-transform: uppercase;
}

.stats-row {
display: grid;
grid-template-columns: 1fr;
gap: 12px;
margin-bottom: 16px;
}

.stats-box {
background: var(--bg-card);
border: 1px solid var(--border);
padding: 16px;
border-radius: var(--radius-card);
box-shadow: var(--shadow-card);
}

.stats-box h3 {
font-size: 0.8rem;
color: var(--text-primary);
margin-bottom: 10px;
letter-spacing: 1.5px;
}

.stats-list .stat-item {
display: flex;
justify-content: space-between;
padding: 6px 0;
border-bottom: 1px solid var(--border);
font-size: 13px;
color: var(--text-secondary);
}

.stats-list .stat-item:last-child { border-bottom: none; }

.stats-actions {
display: flex;
flex-direction: column;
gap: 8px;
}

.btn-action {
padding: 12px 16px;
background: var(--bg-card);
border: 1px solid var(--border);
color: var(--text-primary);
border-radius: var(--radius);
font-size: 13px;
font-family: var(--font-display);
font-weight: 500;
letter-spacing: 1px;
cursor: pointer;
text-decoration: none;
display: inline-block;
text-align: center;
transition: all 0.2s;
-webkit-tap-highlight-color: transparent;
box-shadow: var(--shadow-card);
}

.btn-action:hover {
border-color: var(--neon);
color: var(--neon);
box-shadow: var(--shadow-card-hover);
}

.btn-export { border-color: rgba(var(--neon-rgb), 0.3); color: var(--neon); }
.btn-export:hover { background: rgba(var(--neon-rgb), 0.06); }

/* Filters */
.filters {
display: flex;
flex-direction: column;
gap: 8px;
margin-bottom: 12px;
}

.filters select, .filters input {
padding: 12px;
border: 1px solid var(--border);
border-radius: var(--radius);
font-size: 14px;
font-family: var(--font-body);
color: var(--text-primary);
background: var(--bg-card);
width: 100%;
-webkit-appearance: none;
}

.filters select:focus, .filters input:focus {
outline: none;
border-color: var(--neon);
box-shadow: 0 0 0 3px rgba(var(--neon-rgb), 0.1);
}

/* Table */
.table-wrapper {
overflow-x: auto;
margin-bottom: 12px;
-webkit-overflow-scrolling: touch;
}

.participants-table, .logs-table {
width: 100%;
background: var(--bg-card);
border-collapse: collapse;
border-radius: var(--radius-card);
overflow: hidden;
border: 1px solid var(--border);
min-width: 720px;
box-shadow: var(--shadow-card);
}

th {
background: var(--bg-alt);
color: var(--neon);
padding: 10px 12px;
text-align: left;
font-size: 11px;
font-family: var(--font-display);
font-weight: 500;
letter-spacing: 1.5px;
text-transform: uppercase;
}

td {
padding: 8px 12px;
border-bottom: 1px solid var(--border);
font-size: 13px;
color: var(--text-secondary);
}

tr:hover td { background: var(--surface-hover); }

.badge {
display: inline-block;
padding: 2px 10px;
border-radius: 12px;
font-size: 11px;
font-family: var(--font-display);
font-weight: 500;
letter-spacing: 0.5px;
}

.badge-success { background: rgba(39,174,96,0.1); color: var(--success); }
.badge-warning { background: rgba(255,171,0,0.12); color: var(--warning); }
.badge-danger { background: rgba(var(--danger-rgb), 0.1); color: var(--danger); }

.pagination {
display: flex;
align-items: center;
justify-content: center;
gap: 16px;
margin-top: 12px;
}

.page-info { font-size: 13px; color: var(--text-muted); }

/* Inline Validate */
.inline-validate {
display: flex;
flex-direction: column;
gap: 8px;
margin-bottom: 12px;
}

.inline-validate input {
width: 100%;
padding: 14px 12px;
border: 1px solid var(--border);
border-radius: var(--radius);
font-size: 16px;
font-family: monospace;
color: var(--text-primary);
background: var(--bg-card);
}

.inline-validate input:focus { outline: none; border-color: var(--neon); }

.btn-validate-admin { white-space: nowrap; }

.admin-validate-result {
background: var(--bg-card);
border: 1px solid var(--border);
padding: 16px;
border-radius: var(--radius-card);
font-size: 14px;
color: var(--text-secondary);
box-shadow: var(--shadow-card);
}

.admin-validate-result.success { border-left: 4px solid var(--success); }
.admin-validate-result.error { border-left: 4px solid var(--danger); }
.admin-validate-result.warning { border-left: 4px solid var(--warning); }


/* ===== TABLET (min-width: 480px) ===== */
@media (min-width: 480px) {
.stats-cards { grid-template-columns: repeat(2, 1fr); }
.stats-actions { flex-direction: row; }
.filters { flex-direction: row; flex-wrap: wrap; }
.filters select { width: auto; min-width: 160px; }
.filters input { flex: 1; min-width: 180px; }
  .inline-validate { flex-direction: row; max-width: 500px; }
}

/* ===== TABLET LANDSCAPE / DESKTOP (min-width: 768px) ===== */
@media (min-width: 768px) {
.hamburger { display: none; }

.admin-nav {
display: flex;
position: static;
background: transparent;
backdrop-filter: none;
padding: 0;
border-bottom: none;
flex-direction: row;
align-items: center;
gap: 4px;
}

.nav-link {
font-size: 11px;
padding: 6px 14px;
border-bottom: none;
border-radius: 4px;
}

.nav-link:hover, .nav-link.active { padding-left: 14px; }

.btn-logout { margin-top: 0; margin-left: 12px; width: auto; font-size: 11px; padding: 6px 14px; }

.admin-header-inner { height: 56px; }
.admin-main { padding: 24px 20px; }
.section h2 { font-size: 1.5rem; margin-bottom: 20px; }

.stats-cards { grid-template-columns: repeat(4, 1fr); }
.stat-card { padding: 24px; }
.stat-number { font-size: 2.8rem; }

.stats-row { grid-template-columns: 1fr 1fr; }
.stats-box { padding: 20px; }

.login-card { padding: 40px 32px; }
.login-logo { height: 40px; }
.login-card h1 { font-size: 1.2rem; }

.login-form input { padding: 10px 12px; font-size: 14px; }
  .btn-login { padding: 12px; font-size: 13px; }
}