:root {
    --primary: #004557;
    --primary-container: #005e76;
    --on-primary-container: #86d6f6;
    --on-primary: #ffffff;
    --secondary: #515f74;
    --secondary-container: #d5e3fd;
    --on-secondary-container: #57657b;
    --surface: #f7f9fb;
    --on-surface: #191c1e;
    --surface-bright: #f7f9fb;
    --surface-dim: #d8dadc;
    --surface-variant: #e0e3e5;
    --surface-container: #eceef0;
    --surface-container-lowest: #ffffff;
    --surface-container-low: #f2f4f6;
    --surface-container-high: #e6e8ea;
    --surface-container-highest: #e0e3e5;
    --tertiary: #373f54;
    --tertiary-container: #4e566c;
    --on-tertiary-container: #c4cbe6;
    --outline: #6f7979;
    --outline-variant: #bec8c9;
    --bg-nav: #f7f9fb;
    --gradient-start: #004557;
    --gradient-end: #005e76;
    --status-bar-bg: #004557;
    --error: #ba1a1a;
    
    --font-main: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}


body {
    margin: 0;
    font-family: var(--font-main);
    background-color: var(--surface);
    color: var(--on-surface);
    line-height: 1.5;
    padding-bottom: 2rem; /* space for status bar */
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s ease;
}

/* Utility classes */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

@media (min-width: 640px) {
    .container {
        padding: 0 1.5rem;
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 2rem;
    }
}

.material-symbols-outlined {
    vertical-align: middle;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 1.25rem;
    border-radius: 0.5rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
}

.btn-secondary {
    background: transparent;
    color: var(--on-surface);
    border: 1px solid var(--outline-variant);
}

.btn-secondary:hover {
    background: var(--surface-container);
}

.btn-primary:active {
    transform: scale(0.95);
}

.btn-primary:hover {
    opacity: 0.9;
}

.btn-outline {
    background-color: transparent;
    color: var(--primary);
    border: 1px solid rgba(191, 200, 202, 0.2);
    background: var(--surface-container-lowest);
}

.btn-outline:hover {
    background-color: var(--surface-variant);
}