:root {
    --primary-navy: #0B192C;
    --secondary-navy: #1E3E62;
    --accent-gold: #FFD700;
    --accent-yellow: #FFC107;
    --bg-light: #F4F6F9;
    --surface-white: #FFFFFF;
    --text-dark: #1E293B;
    --text-muted: #64748B;
    --border-color: #E2E8F0;
    --radius-lg: 16px;
    --radius-md: 10px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 25px rgba(11, 25, 44, 0.12);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Cairo', sans-serif;
    -webkit-tap-highlight-color: transparent;
}
body {
    background-color: var(--bg-light);
    color: var(--text-dark);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    padding: 16px;
}
.app-container {
    width: 100%;
    max-width: 480px;
    background: var(--surface-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    margin: 0 auto;
    position: relative;
}

/* Header */
header {
    background: linear-gradient(135deg, var(--primary-navy), var(--secondary-navy));
    color: var(--surface-white);
    padding: 32px 24px 24px;
    text-align: center;
    position: relative;
    border-bottom: 4px solid var(--accent-gold);
}
.logo-box {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.08);
    padding: 8px 18px;
    border-radius: 50px;
    border: 1px solid rgba(255, 215, 0, 0.3);
    margin-bottom: 12px;
}
.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--surface-white);
    letter-spacing: -0.5px;
}
.lightning-icon {
    color: var(--accent-gold);
    font-size: 1.4rem;
}
header p {
    color: #CBD5E1;
    font-size: 0.95rem;
    font-weight: 600;
}

/* Content */
.content {
    padding: 24px 20px;
}
.section-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary-navy);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Tool Cards */
.tools-grid {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.tool-card {
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--surface-white);
    transition: var(--transition);
}
.tool-card:hover {
    border-color: var(--accent-yellow);
    box-shadow: var(--shadow-sm);
}
.tool-info h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary-navy);
    margin-bottom: 4px;
}
.tool-price {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 600;
}
.tool-price span {
    color: var(--secondary-navy);
    font-weight: 700;
}

/* Buttons */
.btn {
    background-color: var(--primary-navy);
    color: var(--surface-white);
    border: none;
    padding: 10px 18px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: auto;
}
.btn:hover { background-color: var(--secondary-navy); }
.btn-accent {
    background-color: var(--accent-gold);
    color: var(--primary-navy);
}
.btn-accent:hover { background-color: var(--accent-yellow); }
.btn-block {
    width: 100%;
    padding: 14px;
    font-size: 1rem;
    border-radius: var(--radius-md);
}
.btn-whatsapp {
    background-color: #25D366;
    color: white;
    margin-top: 16px;
}
.btn-whatsapp:hover { background-color: #1DA851; }

/* Steps */
.step-panel {
    display: none;
    animation: fadeIn 0.4s ease-in-out forwards;
}
.step-panel.active { display: block; }
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Form */
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary-navy);
    margin-bottom: 6px;
}
.form-control {
    width: 100%;
    padding: 12px;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    transition: var(--transition);
    outline: none;
    background-color: #FAFAFA;
}
.form-control:focus {
    border-color: var(--secondary-navy);
    background-color: #FFF;
}
.selected-tool-input {
    font-weight: 700;
    color: var(--primary-navy);
}

/* Payment */
.payment-info {
    background-color: #F8FAFC;
    border: 1px dashed var(--secondary-navy);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 20px;
    text-align: right;
}
.payment-info p {
    font-size: 0.88rem;
    margin-bottom: 8px;
    color: var(--text-dark);
}
.account-number {
    font-family: monospace;
    font-weight: 700;
    background: #E2E8F0;
    padding: 2px 6px;
    border-radius: 4px;
    letter-spacing: 1px;
    direction: ltr;
    display: inline-block;
}

/* Success & PIN */
.success-card {
    text-align: center;
    padding: 20px 10px;
}
.success-card h2 {
    color: var(--primary-navy);
    margin-bottom: 8px;
}
.success-card > p {
    font-size: 0.9rem;
    color: var(--text-muted);
}
.pin-container {
    background: linear-gradient(135deg, var(--primary-navy), var(--secondary-navy));
    color: var(--surface-white);
    border-radius: var(--radius-md);
    padding: 24px;
    margin: 20px 0;
    border: 2px solid var(--accent-gold);
}
.pin-label {
    font-size: 0.9rem;
    color: #CBD5E1;
    margin-bottom: 8px;
}
.pin-code {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: 6px;
    color: var(--accent-gold);
    font-family: monospace;
}

/* Panel header */
.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}
.panel-header .section-title { margin: 0; }
.btn-back {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 0.85rem;
    cursor: pointer;
    font-weight: 600;
}
.btn-back:hover { color: var(--primary-navy); }

.mt-20 { margin-top: 20px; }
.mt-24 { margin-top: 24px; }

/* =====================================================================
   إضافات النسخة الجديدة
   ===================================================================== */
:root {
    --ok: #16A34A;
    --ok-bg: #ECFDF5;
    --warn: #B45309;
    --warn-bg: #FFFBEB;
    --danger: #DC2626;
    --danger-bg: #FEF2F2;
    --info-bg: #EFF6FF;
}
.app-container.wide { max-width: 1040px; }
.view { display: none; animation: fadeIn 0.35s ease-in-out forwards; }
.view.active { display: block; }
.view.narrow { max-width: 420px; margin: 0 auto; }
.muted { color: var(--text-muted); }
.small { font-size: 0.8rem; }
.text-end { text-align: left; }
.danger-text { color: var(--danger); font-weight: 700; }
.warn-text { color: var(--warn); font-weight: 700; }
.mt-6 { margin-top: 6px; }
.mt-12 { margin-top: 12px; }
code { background: #E2E8F0; padding: 1px 6px; border-radius: 4px; direction: ltr; display: inline-block; }

/* حالة اتصال الصندوق */
.box-status {
    display: inline-flex; align-items: center; gap: 8px;
    margin-top: 14px; padding: 4px 14px; border-radius: 50px;
    font-size: 0.8rem; font-weight: 700;
    background: rgba(255,255,255,0.08); color: #CBD5E1;
}
.box-status .dot { width: 9px; height: 9px; border-radius: 50%; background: #94A3B8; }
.box-status.online { color: #BBF7D0; }
.box-status.online .dot { background: #22C55E; box-shadow: 0 0 0 4px rgba(34,197,94,0.25); }
.box-status.offline { color: #FECACA; }
.box-status.offline .dot { background: #EF4444; }

/* تحميل */
.loader {
    width: 36px; height: 36px; margin: 40px auto;
    border: 4px solid var(--border-color); border-top-color: var(--accent-gold);
    border-radius: 50%; animation: spin 0.8s linear infinite;
}
.loader.small { width: 24px; height: 24px; margin: 12px auto; }
@keyframes spin { to { transform: rotate(360deg); } }

/* تبويبات */
.tabs { display: flex; background: var(--bg-light); border-radius: var(--radius-md); padding: 4px; margin-bottom: 20px; }
.tab {
    flex: 1; border: none; background: none; padding: 10px; border-radius: 8px;
    font-weight: 700; color: var(--text-muted); cursor: pointer; transition: var(--transition);
}
.tab.active { background: var(--surface-white); color: var(--primary-navy); box-shadow: var(--shadow-sm); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }
.btn-link {
    background: none; border: none; color: var(--secondary-navy); font-weight: 700;
    cursor: pointer; display: block; margin-inline: auto; font-size: 0.85rem; text-decoration: underline;
}
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-sm { padding: 7px 12px; font-size: 0.8rem; }
.btn-ghost { background: var(--bg-light); color: var(--primary-navy); border: 1px solid var(--border-color); }
.btn-ghost:hover { background: #E2E8F0; }
.btn + .btn-block, .btn-block + .btn-block { margin-top: 10px; }

/* شريط المستخدم */
.userbar {
    display: flex; justify-content: space-between; align-items: center;
    padding-bottom: 14px; margin-bottom: 16px; border-bottom: 1px solid var(--border-color);
}

/* تنبيهات */
.banner {
    border-radius: var(--radius-md); padding: 12px 14px; margin-bottom: 14px;
    font-size: 0.88rem; line-height: 1.7; border: 1px solid transparent;
}
.banner strong { display: block; }
.banner-danger { background: var(--danger-bg); border-color: #FECACA; color: #7F1D1D; }
.banner-warn { background: var(--warn-bg); border-color: #FDE68A; color: #78350F; }
.banner-success { background: var(--ok-bg); border-color: #A7F3D0; color: #064E3B; }
.banner-info { background: var(--info-bg); border-color: #BFDBFE; color: #1E3A8A; }
.hint { font-size: 0.8rem; color: var(--text-muted); margin: 8px 0; text-align: center; }
.hint.warn { color: var(--warn); font-weight: 700; }

/* شارات */
.badge {
    display: inline-block; padding: 2px 10px; border-radius: 50px;
    font-size: 0.72rem; font-weight: 700; white-space: nowrap;
}
.badge-pending { background: #FEF3C7; color: #92400E; }
.badge-paid { background: #DBEAFE; color: #1E40AF; }
.badge-active { background: #DCFCE7; color: #166534; }
.badge-returned { background: #E0E7FF; color: #3730A3; }
.badge-muted { background: #F1F5F9; color: #475569; }
.badge-danger { background: #FEE2E2; color: #991B1B; }

/* بطاقة الاستئجار */
.card { border: 2px solid var(--border-color); border-radius: var(--radius-lg); padding: 18px; margin-bottom: 18px; }
.rental-card { border-color: var(--accent-gold); }
.rental-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-bottom: 10px; }
.rental-head .section-title { margin: 0; }
.kv-list { background: var(--bg-light); border-radius: var(--radius-md); padding: 6px 12px; margin-bottom: 14px; }
.kv { display: flex; justify-content: space-between; padding: 6px 0; font-size: 0.88rem; }
.kv + .kv { border-top: 1px dashed var(--border-color); }
.kv span { color: var(--text-muted); }
.sub-title { font-size: 1rem; color: var(--primary-navy); margin: 16px 0 4px; }
.ref-code {
    font-family: monospace; font-size: 1.5rem; font-weight: 800; letter-spacing: 3px;
    text-align: center; background: var(--primary-navy); color: var(--accent-gold);
    border-radius: 8px; padding: 8px; margin-top: 6px; user-select: all;
}
.ref-code.small-code { font-size: 0.95rem; letter-spacing: 1px; padding: 3px 10px; margin: 0; display: inline-block; }
.pin-timer { margin-top: 8px; font-size: 0.85rem; color: #CBD5E1; }
.pin-timer span { color: var(--accent-gold); font-family: monospace; font-weight: 700; }
.due-box {
    text-align: center; background: var(--bg-light); border-radius: var(--radius-md);
    padding: 14px; margin-bottom: 10px;
}
.due-timer { font-family: monospace; font-size: 2rem; font-weight: 800; color: var(--primary-navy); direction: ltr; }

/* الأدوات والخطط */
.tool-card.is-off { opacity: 0.6; }
.plan-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 14px; }
.plan-option input { position: absolute; opacity: 0; pointer-events: none; }
.plan-card {
    display: flex; flex-direction: column; align-items: center; gap: 2px;
    border: 2px solid var(--border-color); border-radius: var(--radius-md); padding: 12px 8px;
    cursor: pointer; transition: var(--transition); font-size: 0.9rem;
}
.plan-card span { color: var(--text-muted); font-size: 0.85rem; font-weight: 700; }
.plan-option input:checked + .plan-card { border-color: var(--accent-gold); background: #FFFBEB; }
.plan-option input:focus-visible + .plan-card { outline: 2px solid var(--secondary-navy); }
.rules-list { font-size: 0.8rem; color: var(--text-muted); padding-inline-start: 18px; line-height: 1.8; }

/* السجل */
.history { display: flex; flex-direction: column; gap: 8px; }
.history-item {
    display: flex; justify-content: space-between; align-items: center; gap: 10px;
    border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 10px 12px; font-size: 0.88rem;
}

/* إشعار */
.toast {
    position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%) translateY(120px);
    background: var(--primary-navy); color: #fff; padding: 12px 18px; border-radius: var(--radius-md);
    font-weight: 700; font-size: 0.9rem; max-width: calc(100% - 32px); box-shadow: var(--shadow-lg);
    transition: transform 0.3s ease; z-index: 50; text-align: center;
}
.toast.show { transform: translateX(-50%) translateY(0); }
.toast-success { background: #166534; }
.toast-error { background: #991B1B; }

/* لوحة المسؤول */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 20px; }
.stat { background: var(--bg-light); border-radius: var(--radius-md); padding: 12px; text-align: center; }
.stat b { display: block; font-size: 1.4rem; color: var(--primary-navy); }
.stat span { font-size: 0.78rem; color: var(--text-muted); font-weight: 700; }
.stat.ok b { color: var(--ok); font-size: 1.1rem; }
.stat.bad b { color: var(--danger); font-size: 1.1rem; }
.admin-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; }
.admin-section { margin-bottom: 24px; }
.admin-card {
    border: 1.5px solid var(--border-color); border-radius: var(--radius-md); padding: 12px;
    margin-bottom: 10px; display: flex; flex-direction: column; gap: 6px;
}
.admin-card.is-late { border-color: #FCA5A5; background: #FFFBFB; }
.admin-card-top { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.amount { font-weight: 800; color: var(--primary-navy); }
.student { display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: baseline; font-size: 0.88rem; }
.student a { color: #15803D; font-weight: 700; text-decoration: none; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 4px; }
.empty { padding: 6px 0; }

/* محاكي لوحة الأرقام */
.keypad-wrap { background: var(--primary-navy); border-radius: var(--radius-lg); padding: 16px; }
.keypad-screen {
    background: #0F2A1E; color: #4ADE80; font-family: monospace; font-size: 1.8rem;
    letter-spacing: 10px; text-align: center; border-radius: 8px; padding: 8px; margin-bottom: 12px;
}
.keypad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; max-width: 260px; margin: 0 auto; }
.keypad button {
    border: none; border-radius: 10px; padding: 12px 0; font-size: 1.2rem; font-weight: 800;
    background: #E2E8F0; color: var(--primary-navy); cursor: pointer; font-family: monospace;
}
.keypad button:active { transform: scale(0.96); }
.keypad .kp-fn { background: #FCA5A5; }
.keypad .kp-ok { background: var(--accent-gold); }
.keypad-result { margin-top: 12px; text-align: center; color: #CBD5E1; font-size: 0.88rem; font-weight: 700; min-height: 1.4em; }
.keypad-result.ok { color: #4ADE80; }
.keypad-result.bad { color: #FCA5A5; }
.compartments { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 12px; }
.compartment {
    background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.15); border-radius: 8px;
    padding: 8px; color: #CBD5E1; display: flex; justify-content: space-between; font-size: 0.82rem;
}
.compartment.open { border-color: #4ADE80; color: #BBF7D0; }
.switch-row { display: flex; gap: 8px; align-items: flex-start; margin-top: 12px; color: #CBD5E1; font-size: 0.78rem; cursor: pointer; }

@media (max-width: 760px) {
    .admin-grid { grid-template-columns: 1fr; }
    .stats { grid-template-columns: repeat(2, 1fr); }
}

/* تعديل الأدوات */
.tool-edit { border-color: var(--accent-gold); background: #FFFDF5; }
.tool-edit .form-group { margin-bottom: 8px; }
.price-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 8px; }
.price-grid label { font-size: 0.78rem; font-weight: 700; color: var(--primary-navy); display: flex; flex-direction: column; gap: 4px; }
.price-grid .form-control { padding: 8px; }

/* المستخدمون */
.users-section { margin-top: 8px; border-top: 1px solid var(--border-color); padding-top: 20px; }
.users-head { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; margin-bottom: 10px; }
.users-head .section-title { margin: 0; }
.count-pill { background: var(--accent-gold); color: var(--primary-navy); border-radius: 50px; padding: 0 10px; font-size: 0.85rem; }
.table-wrap { overflow-x: auto; margin-top: 10px; border: 1px solid var(--border-color); border-radius: var(--radius-md); }
.users-table { width: 100%; border-collapse: collapse; font-size: 0.84rem; min-width: 760px; }
.users-table th { background: var(--primary-navy); color: #fff; font-weight: 700; padding: 10px 8px; text-align: right; white-space: nowrap; }
.users-table td { padding: 9px 8px; border-top: 1px solid var(--border-color); vertical-align: top; }
.users-table tr:nth-child(even) td { background: #FAFBFC; }
.users-table a { color: #15803D; font-weight: 700; text-decoration: none; }

/* رفع الإيصال */
.receipt-box { margin: 4px 0 12px; }
.receipt-drop {
    display: flex; flex-direction: column; align-items: center; gap: 4px; text-align: center;
    border: 2px dashed var(--accent-gold); border-radius: var(--radius-md); background: #FFFDF5;
    padding: 18px 12px; margin-bottom: 10px; cursor: pointer; transition: var(--transition);
}
.receipt-drop:hover { background: #FFF8DC; }
.receipt-drop input { display: none; }
.receipt-icon { font-size: 1.8rem; }
.receipt-link { font-size: 0.85rem; font-weight: 700; color: var(--secondary-navy); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #B91C1C; }

/* الدخول بحساب Google */
.btn-google { background: #fff; color: var(--text-dark); border: 1.5px solid var(--border-color); gap: 10px; }
.btn-google:hover { background: #F8FAFC; border-color: #CBD5E1; }
.or-divider { display: flex; align-items: center; gap: 10px; margin: 18px 0 14px; color: var(--text-muted); font-size: 0.8rem; font-weight: 600; }
.or-divider::before, .or-divider::after { content: ""; flex: 1; height: 1px; background: var(--border-color); }
.text-start { text-align: right; }

/* فتح القسم مباشرة */
.btn-open { font-size: 1.05rem; padding: 16px; }
.unlock-wait {
    display: flex; flex-direction: column; align-items: center; gap: 4px; text-align: center;
    background: var(--info-bg); border: 1px solid #BFDBFE; border-radius: var(--radius-md); padding: 14px; color: #1E3A8A;
}
.unlock-wait .loader { margin: 4px auto; }
.unlock-list { display: flex; flex-direction: column; gap: 8px; }
.unlock-item {
    display: flex; justify-content: space-between; align-items: center; gap: 10px;
    background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.18); border-radius: 8px;
    padding: 10px; color: #E2E8F0; font-size: 0.85rem;
}
.unlock-empty { color: #94A3B8; text-align: center; padding: 8px; }
.mb-12 { margin-bottom: 12px; }

/* المشرفون */
.add-admin { display: flex; gap: 8px; margin-bottom: 10px; }
.add-admin .form-control { flex: 1; padding: 8px 10px; }
.admin-row { flex-direction: row; justify-content: space-between; align-items: center; }

/* زر واتساب العائم */
.wa-float {
    position: fixed; bottom: 18px; left: 18px; z-index: 40;
    display: inline-flex; align-items: center; gap: 8px;
    background: #25D366; color: #fff; text-decoration: none; font-weight: 700; font-size: 0.85rem;
    padding: 10px 14px; border-radius: 50px; box-shadow: 0 6px 18px rgba(0,0,0,0.18);
}
.wa-float:hover { background: #1DA851; }
.banner .btn-sm { display: inline-flex; color: #fff; text-decoration: none; }