:root {
    --primary-color: #4CAF50;
    --secondary-color: #2196F3;
    --dark-color: #1a1a2e;
    --light-bg: #f0f4f8;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--light-bg);
}

/* Navbar */
.navbar {
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 1rem 0;
}

.navbar-brand {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--primary-color) !important;
}

.nav-link {
    margin: 0 1rem;
    color: var(--dark-color) !important;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-link:hover {
    color: var(--primary-color) !important;
}

.btn-primary-custom {
    background: var(--primary-color);
    border: none;
    padding: 0.7rem 2rem;
    border-radius: 25px;
    color: white;
    font-weight: 600;
    transition: transform 0.3s;
}

.btn-primary-custom:hover {
    transform: translateY(-2px);
    background: #45a049;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 100px 0;
    text-align: center;
}

.hero-section h1 {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: 1.5rem;
}

.hero-section p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
}

/* Features Section */
.features-section {
    padding: 80px 0;
    background: white;
}

.feature-card {
    background: var(--light-bg);
    padding: 2.5rem;
    border-radius: 20px;
    text-align: center;
    transition: transform 0.3s;
    margin-bottom: 2rem;
    border: 2px solid transparent;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
}

.feature-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

/* Dashboard */
.dashboard {
    display: none;
    padding: 40px 0;
}

.balance-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem;
    border-radius: 15px;
    margin-bottom: 2rem;
}

.currency-toggle {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 10px;
    display: inline-flex;
    gap: 1rem;
    margin-top: 1rem;
}

.currency-btn {
    background: transparent;
    border: 2px solid white;
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
}

.currency-btn.active {
    background: white;
    color: var(--dark-color);
}

.transaction-card {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    margin-bottom: 1rem;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Modal Styling */
.modal-content {
    border-radius: 20px;
}

.modal-header {
    background: var(--primary-color);
    color: white;
    border-radius: 20px 20px 0 0;
}

.form-control {
    border-radius: 10px;
    padding: 0.8rem;
}

/* Footer */
.footer {
    background: var(--dark-color);
    color: white;
    padding: 50px 0 20px;
    margin-top: 80px;
}

.footer h5 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.footer a {
    color: #ccc;
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
}

.footer a:hover {
    color: var(--primary-color);
}

/* Admin Panel */
.admin-panel {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    margin-bottom: 2rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.user-list-item {
    padding: 1rem;
    background: var(--light-bg);
    border-radius: 10px;
    margin-bottom: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.hidden {
    display: none;
}