:root {
    --primary: #FFD700;
    --primary-dark: #E6C200;
    --bg-dark: #0a0a0a;
    --bg-card: #1a1a1a;
    --bg-card-hover: #222;
    --text-primary: #ffffff;
    --text-secondary: #888;
    --text-muted: #555;
    --success: #00D26A;
    --warning: #FF9500;
    --danger: #FF3B30;
    --border-radius: 16px;
    --shadow: 0 10px 40px rgba(0,0,0,0.4);
}

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

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

.screen { display: none; min-height: 100vh; }
.screen.active { display: block; }

#login-screen {
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 50%, #0a0a0a 100%);
    align-items: center;
    justify-content: center;
    padding: 20px;
}
#login-screen.active { display: flex; }

.login-container { width: 100%; max-width: 400px; text-align: center; }
.logo-container { margin-bottom: 40px; }
.logo-img { max-width: 280px; height: auto; animation: glow-img 2s ease-in-out infinite alternate; }

@keyframes glow-img {
    from { filter: drop-shadow(0 0 10px rgba(255, 215, 0, 0.3)); }
    to { filter: drop-shadow(0 0 25px rgba(255, 215, 0, 0.5)); }
}

.tagline { color: var(--text-secondary); font-size: 16px; margin-top: 8px; }

.login-box {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 32px 24px;
    box-shadow: var(--shadow);
    border: 1px solid #333;
}

.login-box h2 { font-size: 20px; margin-bottom: 24px; color: var(--text-primary); }

.input-group { text-align: left; margin-bottom: 16px; }
.input-group label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 8px; font-weight: 600; }
.input-group input, .input-group select {
    width: 100%; padding: 14px 16px; font-size: 16px;
    border: 2px solid #333; border-radius: 12px;
    background: var(--bg-dark); color: var(--text-primary);
    transition: border-color 0.3s, box-shadow 0.3s; font-family: inherit;
}
.input-group input:focus, .input-group select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px rgba(255, 215, 0, 0.1); }
.input-group input::placeholder { color: var(--text-muted); }

.btn-primary {
    width: 100%; padding: 16px 24px; font-size: 16px; font-weight: 700;
    border: none; border-radius: 12px; background: var(--primary); color: var(--bg-dark);
    cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 10px;
    transition: transform 0.2s, box-shadow 0.2s, background 0.2s; margin-top: 24px; font-family: inherit;
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 25px rgba(255, 215, 0, 0.3); }
.btn-primary:active { transform: translateY(0); }
.btn-primary svg { width: 20px; height: 20px; }

.btn-small {
    padding: 10px 16px; font-size: 14px; font-weight: 600;
    border: none; border-radius: 8px; background: var(--primary); color: var(--bg-dark);
    cursor: pointer; font-family: inherit;
}
.btn-small:hover { background: var(--primary-dark); }

.error-msg { color: var(--danger); font-size: 14px; margin-top: 16px; min-height: 20px; }

.remember-group { margin-top: 16px; }
.checkbox-container { display: flex; align-items: center; gap: 10px; cursor: pointer; user-select: none; }
.checkbox-container input { display: none; }
.checkmark { width: 22px; height: 22px; border: 2px solid #444; border-radius: 6px; background: var(--bg-dark); display: flex; align-items: center; justify-content: center; transition: all 0.2s; }
.checkbox-container input:checked + .checkmark { background: var(--primary); border-color: var(--primary); }
.checkmark::after { content: '✓'; color: var(--bg-dark); font-size: 14px; font-weight: 700; opacity: 0; transition: opacity 0.2s; }
.checkbox-container input:checked + .checkmark::after { opacity: 1; }
.remember-text { font-size: 14px; color: var(--text-secondary); }
.footer-text { margin-top: 32px; font-size: 14px; color: var(--text-secondary); }
.footer-text a { color: var(--primary); text-decoration: none; font-weight: 600; }

#main-screen { padding-bottom: 70px; }

header { background: var(--bg-card); padding: 16px 20px; border-bottom: 1px solid #333; position: sticky; top: 0; z-index: 100; }
.header-content { display: flex; justify-content: space-between; align-items: center; max-width: 600px; margin: 0 auto; }
.user-info { display: flex; align-items: center; gap: 12px; }
.user-number { background: var(--primary); color: var(--bg-dark); padding: 6px 12px; border-radius: 20px; font-weight: 700; font-size: 14px; }
.user-name { font-weight: 600; font-size: 16px; }
.btn-icon { background: transparent; border: none; padding: 10px; border-radius: 12px; cursor: pointer; transition: background 0.2s; }
.btn-icon:hover { background: rgba(255, 255, 255, 0.1); }
.btn-icon svg { width: 22px; height: 22px; color: var(--text-secondary); }
.btn-icon.rotating svg { animation: spin 1s linear infinite; }
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
#btn-recargar-cliente { margin-right: 5px; }
#btn-recargar-cliente svg { color: var(--success); }

main { padding: 20px; max-width: 600px; margin: 0 auto; }

.bono-card {
    background: linear-gradient(135deg, #2a2a0a 0%, #1a1a00 100%);
    border: 2px solid var(--primary); border-radius: var(--border-radius);
    padding: 24px; margin-bottom: 20px; box-shadow: 0 0 30px rgba(255, 215, 0, 0.1);
}
.bono-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.bono-label { font-size: 14px; color: var(--primary); font-weight: 600; text-transform: uppercase; letter-spacing: 1px; }
.bono-icon { font-size: 24px; }
.bono-amount { font-size: 48px; font-weight: 800; color: var(--primary); margin-bottom: 16px; text-shadow: 0 0 20px rgba(255, 215, 0, 0.3); }
.bono-details { display: flex; gap: 24px; padding-top: 16px; border-top: 1px solid rgba(255, 215, 0, 0.2); }
.bono-detail { display: flex; flex-direction: column; gap: 4px; }
.detail-label { font-size: 12px; color: var(--text-muted); }
.detail-value { font-size: 16px; font-weight: 600; color: var(--text-secondary); }

.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 24px; }
.stat-card { background: var(--bg-card); border-radius: 12px; padding: 16px; text-align: center; border: 1px solid #333; }
.stat-icon { font-size: 24px; margin-bottom: 8px; }
.stat-value { font-size: 20px; font-weight: 700; color: var(--text-primary); }
.stat-label { font-size: 11px; color: var(--text-secondary); margin-top: 4px; }

.tabs { display: flex; gap: 8px; margin-bottom: 16px; }
.tab { flex: 1; padding: 12px 16px; font-size: 14px; font-weight: 600; border: none; border-radius: 12px; background: var(--bg-card); color: var(--text-secondary); cursor: pointer; transition: all 0.2s; font-family: inherit; }
.tab.active { background: var(--primary); color: var(--bg-dark); }
.tab:hover:not(.active) { background: var(--bg-card-hover); }

.tab-panel { display: none; }
.tab-panel.active { display: block; }
.items-list { display: flex; flex-direction: column; gap: 10px; }
.item-card { background: var(--bg-card); border-radius: 12px; padding: 16px; display: flex; justify-content: space-between; align-items: center; border: 1px solid #333; transition: transform 0.2s, border-color 0.2s; }
.item-card:hover { transform: translateX(4px); border-color: #444; }
.item-info { flex: 1; }
.item-name { font-weight: 600; font-size: 15px; margin-bottom: 4px; }
.item-date { font-size: 12px; color: var(--text-muted); }
.item-price { font-size: 18px; font-weight: 700; color: var(--primary); }
.item-status { display: flex; flex-direction: column; align-items: flex-end; gap: 4px; }
.status-badge { font-size: 11px; padding: 4px 10px; border-radius: 20px; font-weight: 600; }
.status-badge.pendiente { background: rgba(255, 149, 0, 0.2); color: var(--warning); }
.status-badge.enviado { background: rgba(0, 210, 106, 0.2); color: var(--success); }

.empty-state { text-align: center; padding: 48px 20px; color: var(--text-secondary); }
.empty-icon { font-size: 48px; margin-bottom: 16px; opacity: 0.5; }
.empty-state p { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.empty-state span { font-size: 14px; color: var(--text-muted); }

.status-bar { position: fixed; bottom: 0; left: 0; right: 0; background: var(--bg-card); border-top: 1px solid #333; padding: 16px 20px; display: flex; align-items: center; justify-content: center; gap: 10px; }
.status-icon { font-size: 18px; }
.status-text { font-size: 14px; color: var(--text-secondary); }
.status-text strong { color: var(--primary); }

.loading-overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0, 0, 0, 0.9); display: none; align-items: center; justify-content: center; flex-direction: column; gap: 20px; z-index: 9999; }
.loading-overlay.active { display: flex; }
.spinner { width: 50px; height: 50px; border: 4px solid #333; border-top-color: var(--primary); border-radius: 50%; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-overlay p { color: var(--text-secondary); font-size: 14px; }

/* POPUP */
.popup-overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0, 0, 0, 0.95); display: none; align-items: center; justify-content: center; padding: 20px; z-index: 10000; }
.popup-overlay.active { display: flex; }
.popup-box { background: var(--bg-card); border-radius: var(--border-radius); padding: 32px 24px; max-width: 400px; width: 100%; border: 2px solid var(--primary); box-shadow: 0 0 40px rgba(255, 215, 0, 0.2); }
.popup-header { text-align: center; margin-bottom: 16px; }
.popup-icon { font-size: 48px; display: block; margin-bottom: 12px; }
.popup-header h3 { font-size: 22px; font-weight: 700; color: var(--primary); }
.popup-desc { text-align: center; color: var(--text-secondary); font-size: 14px; margin-bottom: 24px; line-height: 1.5; }

/* ========== ADMIN PANEL ========== */
.admin-header { background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%); }
.admin-badge { background: linear-gradient(135deg, #FFD700, #FFA500); color: #000; padding: 6px 14px; border-radius: 20px; font-weight: 700; font-size: 13px; }

.admin-main { padding: 20px; max-width: 800px; margin: 0 auto; }

.admin-tabs { display: flex; gap: 8px; margin-bottom: 24px; flex-wrap: wrap; }
.admin-tab { padding: 12px 20px; font-size: 14px; font-weight: 600; border: none; border-radius: 12px; background: var(--bg-card); color: var(--text-secondary); cursor: pointer; transition: all 0.2s; font-family: inherit; }
.admin-tab.active { background: linear-gradient(135deg, #FFD700, #FFA500); color: #000; }
.admin-tab:hover:not(.active) { background: var(--bg-card-hover); }
.btn-recargar { padding: 12px 20px; font-size: 14px; font-weight: 600; border: none; border-radius: 12px; background: linear-gradient(135deg, #00D26A, #00A854); color: #fff; cursor: pointer; transition: all 0.2s; font-family: inherit; margin-left: auto; }
.btn-recargar:hover { transform: scale(1.05); box-shadow: 0 4px 15px rgba(0, 210, 106, 0.4); }

.admin-panel { display: none; }
.admin-panel.active { display: block; }
.admin-panel h2 { font-size: 24px; margin-bottom: 20px; color: var(--primary); }
.admin-panel h3 { font-size: 18px; margin: 24px 0 16px; color: var(--text-secondary); }

.admin-stats-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.admin-stats-grid.tres-cols { grid-template-columns: repeat(3, 1fr); }
.admin-stat-card { background: var(--bg-card); border-radius: 16px; padding: 20px; text-align: center; border: 2px solid transparent; }
.admin-stat-card.verde { border-color: #00D26A; background: linear-gradient(135deg, rgba(0,210,106,0.1), transparent); }
.admin-stat-card.azul { border-color: #007AFF; background: linear-gradient(135deg, rgba(0,122,255,0.1), transparent); }
.admin-stat-card.morado { border-color: #AF52DE; background: linear-gradient(135deg, rgba(175,82,222,0.1), transparent); }
.admin-stat-card.naranja { border-color: #FF9500; background: linear-gradient(135deg, rgba(255,149,0,0.1), transparent); }
.admin-stat-card.dorado { border-color: #FFD700; background: linear-gradient(135deg, rgba(255,215,0,0.15), transparent); }
.admin-stats-grid.dos-cols { grid-template-columns: repeat(2, 1fr); }
.admin-stat-label { font-size: 14px; color: var(--text-secondary); margin-bottom: 8px; }
.admin-stat-value { font-size: 36px; font-weight: 800; color: var(--text-primary); }
.admin-stat-extra { font-size: 14px; color: var(--primary); margin-top: 4px; font-weight: 600; }

.turnos-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.turno-card { background: var(--bg-card); border-radius: 16px; padding: 20px; text-align: center; border: 1px solid #333; }
.turno-card.manana { border-left: 4px solid #FFD700; }
.turno-card.tarde { border-left: 4px solid #FF6B35; }
.turno-icon { font-size: 32px; margin-bottom: 8px; }
.turno-nombre { font-size: 14px; color: var(--text-secondary); margin-bottom: 8px; }
.turno-ventas { font-size: 18px; font-weight: 700; color: var(--text-primary); }
.turno-total { font-size: 14px; color: var(--primary); margin-top: 4px; }

.top-clientes-list { display: flex; flex-direction: column; gap: 8px; }
.top-cliente { display: flex; align-items: center; gap: 12px; background: var(--bg-card); padding: 12px 16px; border-radius: 12px; border: 1px solid #333; }
.top-posicion { width: 30px; height: 30px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 14px; }
.top-posicion.oro { background: #FFD700; color: #000; }
.top-posicion.plata { background: #C0C0C0; color: #000; }
.top-posicion.bronce { background: #CD7F32; color: #000; }
.top-posicion.normal { background: #333; color: #fff; }
.top-info { flex: 1; }
.top-nombre { font-weight: 600; font-size: 14px; }
.top-numero { font-size: 12px; color: var(--text-muted); }
.top-total { font-size: 16px; font-weight: 700; color: var(--primary); }

.search-box { display: flex; gap: 12px; margin-bottom: 20px; }
.search-box input { flex: 1; padding: 12px 16px; font-size: 16px; border: 2px solid #333; border-radius: 12px; background: var(--bg-dark); color: var(--text-primary); font-family: inherit; }
.search-box input:focus { outline: none; border-color: var(--primary); }

.cliente-card { background: var(--bg-card); border-radius: 16px; padding: 20px; margin-bottom: 20px; border: 2px solid var(--primary); }
.cliente-header { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; padding-bottom: 16px; border-bottom: 1px solid #333; }
.cliente-numero { background: var(--primary); color: #000; padding: 8px 16px; border-radius: 20px; font-weight: 700; font-size: 18px; }
.cliente-nombre { font-size: 20px; font-weight: 600; }

.cliente-form .form-row { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.cliente-form label { width: 120px; font-size: 14px; color: var(--text-secondary); }
.cliente-form input { flex: 1; padding: 10px 14px; font-size: 14px; border: 2px solid #333; border-radius: 8px; background: var(--bg-dark); color: var(--text-primary); font-family: inherit; }
.cliente-form input:focus { outline: none; border-color: var(--primary); }
.form-buttons { margin-top: 16px; }
.msg { margin-top: 12px; padding: 10px; border-radius: 8px; font-size: 14px; }
.msg.success { background: rgba(0,210,106,0.2); color: var(--success); }
.msg.error { background: rgba(255,59,48,0.2); color: var(--danger); }

.clientes-lista { display: flex; flex-direction: column; gap: 8px; max-height: 400px; overflow-y: auto; }
.cliente-mini { display: flex; align-items: center; gap: 12px; background: var(--bg-card); padding: 12px 16px; border-radius: 12px; border: 1px solid #333; cursor: pointer; transition: all 0.2s; }
.cliente-mini:hover { border-color: var(--primary); transform: translateX(4px); }
.cliente-mini-num { background: #333; color: var(--primary); padding: 4px 10px; border-radius: 12px; font-weight: 600; font-size: 13px; }
.cliente-mini-nombre { flex: 1; font-size: 14px; }
.cliente-mini-bono { font-size: 14px; color: var(--primary); font-weight: 600; }

.filtros-ventas { display: flex; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }
.filtros-ventas select, .filtros-ventas input { padding: 10px 14px; font-size: 14px; border: 2px solid #333; border-radius: 8px; background: var(--bg-dark); color: var(--text-primary); font-family: inherit; }
.filtros-ventas select:focus, .filtros-ventas input:focus { outline: none; border-color: var(--primary); }

.ventas-admin-lista { display: flex; flex-direction: column; gap: 8px; max-height: 500px; overflow-y: auto; }
.venta-admin-item { display: flex; align-items: center; gap: 12px; background: var(--bg-card); padding: 12px 16px; border-radius: 12px; border: 1px solid #333; }
.venta-fecha { font-size: 12px; color: var(--text-muted); width: 95px; white-space: nowrap; }
.venta-cliente { font-size: 13px; color: var(--primary); font-weight: 600; flex: 1; min-width: 80px; }
.venta-desc { flex: 1; font-size: 14px; font-weight: 500; }
.venta-precio { font-size: 16px; font-weight: 700; color: var(--primary); }
.venta-delete { background: var(--danger); color: #fff; border: none; padding: 6px 10px; border-radius: 6px; cursor: pointer; font-size: 12px; }
.venta-delete:hover { opacity: 0.8; }

@media (max-width: 500px) {
    .admin-stats-grid { grid-template-columns: 1fr; }
    .turnos-grid { grid-template-columns: 1fr; }
    .filtros-ventas { flex-direction: column; }
    .cliente-form .form-row { flex-direction: column; align-items: stretch; }
    .cliente-form label { width: auto; margin-bottom: 4px; }
}