:root {
    --bg-color: #e0e5ec;
    --text-color: #44474a;
    --shadow-light: #ffffff;
    --shadow-dark: #a3b1c6;
    --accent-color: #007bff;
    --border-radius: 20px;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
}

/* Navbar Styles */
.navbar {
    padding: 1.5rem 0;
    width: 100%;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-color);
    text-decoration: none;
    padding: 10px 20px;
    border-radius: var(--border-radius);
    box-shadow: 6px 6px 12px var(--shadow-dark),
                -6px -6px 12px var(--shadow-light);
}

.nav-menu {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 10px;
    border-radius: var(--border-radius);
    box-shadow: inset 4px 4px 8px var(--shadow-dark),
                inset -4px -4px 8px var(--shadow-light);
}

.nav-item {
    margin: 0 0.5rem;
}

.nav-item a {
    color: var(--text-color);
    text-decoration: none;
    padding: 8px 15px;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.nav-item a:hover {
    box-shadow: 4px 4px 8px var(--shadow-dark),
                -4px -4px 8px var(--shadow-light);
    color: var(--accent-color);
}

/* Main Content Container */
.main-content {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 120px);
}

/* Login Form Styles */
.login-container {
    background: var(--bg-color);
    padding: 3rem;
    border-radius: 30px;
    box-shadow: 9px 9px 16px var(--shadow-dark),
                -9px -9px 16px var(--shadow-light);
    width: 100%;
    max-width: 400px;
}

.login-container h2 {
    margin-bottom: 2rem;
    text-align: center;
    color: var(--text-color);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.75rem;
    margin-left: 10px;
    color: #666;
    font-size: 0.9rem;
}

.form-group input {
    width: 100%;
    padding: 1rem;
    background: var(--bg-color);
    border: none;
    border-radius: 15px;
    box-sizing: border-box;
    color: var(--text-color);
    box-shadow: inset 4px 4px 8px var(--shadow-dark),
                inset -4px -4px 8px var(--shadow-light);
    outline: none;
}

button {
    width: 100%;
    padding: 1rem;
    margin-top: 1rem;
    background: var(--bg-color);
    color: var(--accent-color);
    border: none;
    border-radius: 15px;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: bold;
    box-shadow: 6px 6px 12px var(--shadow-dark),
                -6px -6px 12px var(--shadow-light);
    transition: all 0.2s ease;
}

button:hover {
    box-shadow: 3px 3px 6px var(--shadow-dark),
                -3px -3px 6px var(--shadow-light);
}

button:active {
    box-shadow: inset 4px 4px 8px var(--shadow-dark),
                inset -4px -4px 8px var(--shadow-light);
}

.error-message {
    color: #d9534f;
    background-color: var(--bg-color);
    padding: 1rem;
    margin-bottom: 1.5rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: inset 2px 2px 5px var(--shadow-dark),
                inset -2px -2px 5px var(--shadow-light);
    display: none;
}

/* Dashboard Styles */
.dashboard-card {
    background: var(--bg-color);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: 6px 6px 12px var(--shadow-dark),
                -6px -6px 12px var(--shadow-light);
    margin-top: 2rem;
}

/* Homepage Styles */
.hero-section {
    text-align: center;
    padding: 4rem 1rem;
    max-width: 900px;
    margin: 0 auto;
}

.hero-section h1 {
    font-size: 3rem;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.hero-section p {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 2.5rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem 4rem 1rem;
}

.feature-card {
    background: var(--bg-color);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: 6px 6px 12px var(--shadow-dark),
                -6px -6px 12px var(--shadow-light);
    text-align: center;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: var(--text-color);
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

.hero-cta {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1.2rem;
    text-decoration: none;
    color: var(--accent-color);
    border-radius: 15px;
    box-shadow: 6px 6px 12px var(--shadow-dark),
                -6px -6px 12px var(--shadow-light);
    transition: all 0.2s ease;
}

.hero-cta:hover {
    box-shadow: 3px 3px 6px var(--shadow-dark),
                -3px -3px 6px var(--shadow-light);
}