:root {
    --primary: #4F46E5; /* Indigo */
    --primary-hover: #4338CA;
    --secondary: #10B981; /* Emerald */
    --background: #F3F4F6;
    --surface: #FFFFFF;
    --text-main: #111827;
    --text-muted: #6B7280;
    --border: #E5E7EB;
    --danger: #EF4444;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
    background-color: var(--background);
    color: var(--text-main);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* Glassmorphism containers */
.glass-panel {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-lg);
}

.container {
    width: 100%;
    max-width: 480px; /* Mobile first max width */
    margin: 0 auto;
    padding: 20px;
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 700;
    color: var(--text-main);
}

p {
    color: var(--text-muted);
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-main);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all 0.3s ease;
    background: var(--surface);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 700;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    width: 100%;
    text-decoration: none;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    width: auto;
}

.btn-danger {
    background-color: #FEE2E2;
    color: var(--danger);
}

.btn-danger:hover {
    background-color: #FCA5A5;
}

/* Login specific */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: linear-gradient(135deg, #a18cd1 0%, #fbc2eb 100%);
}

.login-card {
    padding: 2.5rem 2rem;
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.login-logo {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary) 0%, #a18cd1 100%);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2.5rem;
    box-shadow: var(--shadow-md);
}

.alert {
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.alert-danger {
    background-color: #FEF2F2;
    color: var(--danger);
    border: 1px solid #FCA5A5;
}

.alert-success {
    background-color: #ECFDF5;
    color: var(--secondary);
    border: 1px solid #6EE7B7;
}

/* Dashboard Layout */
.app-header {
    background: var(--surface);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 10;
}

.app-brand {
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.content-area {
    padding: 1.5rem;
    flex: 1;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
}

.card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
    transition: transform 0.2s;
}

.card-title {
    margin-bottom: 1rem;
    font-size: 1.125rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.5rem;
}

/* Bottom Navigation for Mobile */
.bottom-nav {
    background: var(--surface);
    display: flex;
    justify-content: space-around;
    padding: 0.75rem 0;
    box-shadow: 0 -4px 10px rgba(0,0,0,0.05);
    position: sticky;
    bottom: 0;
    z-index: 10;
    border-top-left-radius: var(--radius-lg);
    border-top-right-radius: var(--radius-lg);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.75rem;
    font-weight: 600;
    transition: color 0.2s;
}

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

.nav-icon {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

/* Lists and Tables */
.item-list {
    list-style: none;
}

.item-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
}

.item-row:last-child {
    border-bottom: none;
}

.item-info h4 {
    margin-bottom: 0.25rem;
}

.item-info p {
    font-size: 0.875rem;
}

.badge {
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 700;
    background: #E0E7FF;
    color: var(--primary);
}

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #D1D5DB;
}

/* Grid system */
.grid {
    display: grid;
    gap: 1rem;
}
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

@media (max-width: 600px) {
    .grid-2, .grid-3 {
        grid-template-columns: 1fr;
    }
}