@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@400;500;600;700&family=Inter:wght@400;500;600;700&display=swap');

:root {
    --bg-main: #000000; /* Pure Black */
    --bg-card: #0f172a; /* Deep Slate */
    --bg-input: #1e293b; 
    --primary: #2563eb; /* Strong Blue */
    --primary-hover: #1d4ed8;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444; /* Debt Highlight */
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border: #334155;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.5);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Cairo', 'Inter', sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    direction: rtl;
    min-height: 100vh;
}

.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.hidden { display: none !important; }

/* Views */
.login-view {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at top right, #1d4ed8, #000000);
}

.login-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 1.5rem;
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 400px;
    text-align: center;
    border: 1px solid var(--border);
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding: 1rem;
    background: var(--bg-card);
    border-radius: 1rem;
    border: 1px solid var(--border);
}

.logo-section h1 {
    font-size: 1.5rem;
    color: var(--primary);
    font-weight: 700;
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 1rem;
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.stat-title { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 0.5rem; }
.stat-value { font-size: 1.5rem; font-weight: 700; }
.stat-icon { position: absolute; top: 1rem; left: 1rem; opacity: 0.1; font-size: 2.5rem; }

.stat-card.remaining { border-right: 5px solid var(--danger); }
.stat-card.paid { border-right: 5px solid var(--success); }
.stat-card.total { border-right: 5px solid var(--primary); }

/* Main Content */
.main-content {
    background: var(--bg-card);
    border-radius: 1rem;
    padding: 1.5rem;
    border: 1px solid var(--border);
}

.table-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    gap: 1rem;
    flex-wrap: wrap;
}

.search-box { flex: 1; min-width: 250px; position: relative; }
.search-box input {
    width: 100%;
    padding: 12px 45px 12px 15px;
    border-radius: 0.75rem;
    border: 1px solid var(--border);
    background: var(--bg-input);
    color: white; outline: none;
}
.search-icon { position: absolute; right: 15px; top: 50%; transform: translateY(-50%); color: var(--text-muted); }

/* Table */
.table-wrapper { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; text-align: right; }
th { padding: 1rem; color: var(--text-muted); border-bottom: 1px solid var(--border); }
td { padding: 1rem; border-bottom: 1px solid var(--border); }
tr:hover { background: rgba(255,255,255,0.02); }

/* Badges */
.badge { padding: 5px 12px; border-radius: 20px; font-size: 0.7rem; font-weight: 600; }
.badge-paid { background: rgba(16, 185, 129, 0.1); color: #10b981; border: 1px solid #10b981; }
.badge-pending { background: rgba(239, 68, 68, 0.1); color: #ef4444; border: 1px solid #ef4444; }
.badge-partial { background: rgba(245, 158, 11, 0.1); color: #f59e0b; border: 1px solid #f59e0b; }

/* Buttons */
.btn {
    padding: 10px 20px; border-radius: 0.75rem; border: none; cursor: pointer;
    font-weight: 600; transition: var(--transition); display: inline-flex; align-items: center; gap: 8px;
}
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-2px); }
.btn-icon { padding: 8px; border-radius: 0.5rem; background: var(--bg-input); color: white; }
.btn-icon:hover { background: var(--primary); }
.whatsapp-btn { background: #25d366; color: white; }

/* Modal */
.modal-overlay {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.85); display: flex; align-items: center; justify-content: center;
    z-index: 1000; padding: 10px; backdrop-filter: blur(5px);
}
.modal {
    background: var(--bg-card); width: 100%; max-width: 500px;
    border-radius: 1.5rem; padding: 2rem; border: 1px solid var(--border);
    max-height: 90vh; overflow-y: auto;
}

.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; margin-bottom: 0.5rem; color: var(--text-muted); font-size: 0.9rem; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: 12px; border-radius: 0.75rem; border: 1px solid var(--border);
    background: var(--bg-input); color: white; outline: none;
}

/* Customer Detials Special */
.details-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 2rem; border-bottom: 1px solid var(--border); padding-bottom: 1rem; }
.balance-highlight { font-size: 2rem; font-weight: 800; color: var(--danger); margin: 0.5rem 0; }

.payment-history { margin-top: 2rem; }
.history-item { 
    display: flex; justify-content: space-between; align-items: center; 
    padding: 12px; background: var(--bg-input); border-radius: 0.75rem; margin-bottom: 8px;
}

/* Color indicators */
.text-danger { color: var(--danger) !important; }
.text-success { color: var(--success) !important; }

/* Responsive */
@media (max-width: 768px) {
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .table-controls { flex-direction: column; }
    .search-box { min-width: 100%; }
    
    table thead { display: none; }
    table tr { display: block; background: var(--bg-input); padding: 1rem; border-radius: 1rem; margin-bottom: 1rem; }
    table td { display: flex; justify-content: space-between; border: none; padding: 8px 0; }
    table td:before { content: attr(data-label); font-weight: 700; color: var(--text-muted); }
}