@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@300;400;500;600;700;800&display=swap');

:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-rgb: 37, 99, 235;
    --secondary: #d97706;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --dark: #0f172a;
    --light: #f8fafc;
    --card-bg: rgba(255, 255, 255, 0.9);
    --border: #e2e8f0;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --radius: 12px;
    --radius-lg: 16px;
    --font: 'Cairo', sans-serif;
}

[data-theme="dark"] {
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --primary-rgb: 59, 130, 246;
    --secondary: #f59e0b;
    --light: #0f172a;
    --dark: #f8fafc;
    --card-bg: rgba(30, 41, 59, 0.7);
    --border: #334155;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
}

* {
    font-family: var(--font);
    box-sizing: border-box;
}

body {
    background-color: var(--light);
    color: var(--dark);
    margin: 0;
    padding-bottom: 75px; /* space for bottom nav on mobile */
    min-height: 100vh;
    direction: rtl;
    text-align: right;
    transition: background-color 0.3s, color 0.3s;
}

/* Glassmorphism card */
.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 20px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.glass-card:hover {
    box-shadow: var(--shadow-lg);
}

/* Buttons styling */
.btn-primary {
    background-color: var(--primary);
    border-color: var(--primary);
    border-radius: var(--radius);
    padding: 10px 20px;
    font-weight: 500;
    transition: all 0.2s;
}

.btn-primary:hover, .btn-primary:focus {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.3);
}

.btn-secondary {
    border-radius: var(--radius);
    padding: 10px 20px;
}

/* Inputs styling */
.form-control, .form-select {
    border-radius: var(--radius);
    border: 1.5px solid var(--border);
    padding: 10px 15px;
    background-color: var(--card-bg);
    color: var(--dark);
    transition: all 0.2s;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.15);
    background-color: var(--card-bg);
    color: var(--dark);
}

/* Header & Navbar styling */
.main-navbar {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    padding: 10px 20px;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-brand-logo {
    height: 42px;
    width: 42px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary);
    margin-left: 10px;
}

/* Bottom Navigation Bar for Mobile */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 65px;
    background: var(--card-bg);
    backdrop-filter: blur(15px);
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 1050;
    padding-bottom: env(safe-area-inset-bottom);
}

.bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--dark);
    opacity: 0.6;
    text-decoration: none;
    font-size: 11px;
    font-weight: 500;
    transition: all 0.2s;
    flex: 1;
}

.bottom-nav-item i {
    font-size: 20px;
    margin-bottom: 3px;
}

.bottom-nav-item.active {
    color: var(--primary);
    opacity: 1;
}

.bottom-nav-item:hover {
    color: var(--primary);
    opacity: 0.8;
}

/* Floating Action Button for Adding Receipt */
.fab-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: white !important;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(var(--primary-rgb), 0.4);
    transform: translateY(-15px);
    transition: all 0.2s;
    border: 4px solid var(--light);
}

.fab-btn:hover {
    transform: translateY(-18px) scale(1.05);
    box-shadow: 0 6px 14px rgba(var(--primary-rgb), 0.5);
}

.fab-btn i {
    font-size: 24px;
}

/* Stats Widgets */
.stat-card {
    position: relative;
    overflow: hidden;
}

.stat-card::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 150px;
    height: 150px;
    background: rgba(var(--primary-rgb), 0.05);
    border-radius: 50%;
    z-index: 0;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(var(--primary-rgb), 0.1);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-left: 15px;
}

/* Camera and Scanning Interface */
.camera-container {
    position: relative;
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
    aspect-ratio: 4/3;
    background: #000;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

#camera-stream {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Animated Scanner Laser */
.scanner-laser {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(to right, transparent, var(--danger), transparent);
    box-shadow: 0 0 8px var(--danger);
    animation: scan 2s linear infinite;
    display: none;
    z-index: 10;
}

@keyframes scan {
    0% { top: 0%; }
    50% { top: 100%; }
    100% { top: 0%; }
}

/* Dark mode toggle button */
.theme-toggle {
    background: none;
    border: none;
    color: var(--dark);
    font-size: 20px;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: background-color 0.2s;
}

.theme-toggle:hover {
    background-color: rgba(var(--primary-rgb), 0.1);
}

/* Responsive grid spacing */
@media (min-width: 768px) {
    body {
        padding-bottom: 20px; /* remove bottom padding for desktop */
    }
    .bottom-nav {
        display: none; /* hide bottom nav on desktop */
    }
}

@media (max-width: 767px) {
    .desktop-nav {
        display: none !important; /* hide header nav menu on mobile */
    }
    .container {
        padding-left: 15px;
        padding-right: 15px;
    }
}