:root {
    /* Colors - Design System */
    --surface: #f8f9fa;
    --surface-dim: #d9dadb;
    --surface-bright: #f8f9fa;
    --surface-container-lowest: #ffffff;
    --surface-container-low: #f3f4f5;
    --surface-container: #edeeef;
    --surface-container-high: #e7e8e9;
    --surface-container-highest: #e1e3e4;
    --on-surface: #191c1d;
    --on-surface-variant: #444650;
    --inverse-surface: #2e3132;
    --inverse-on-surface: #f0f1f2;
    --outline: #757682;
    --outline-variant: #c5c6d2;
    --surface-tint: #435b9f;
    --primary: #00113a;
    --on-primary: #ffffff;
    --primary-container: #002366;
    --on-primary-container: #758dd5;
    --inverse-primary: #b3c5ff;
    --secondary: #725c00;
    --on-secondary: #ffffff;
    --secondary-container: #fed000;
    --on-secondary-container: #6f5900;
    --tertiary: #001904;
    --on-tertiary: #ffffff;
    --tertiary-container: #00300d;
    --on-tertiary-container: #22a546;
    --error: #ba1a1a;
    --on-error: #ffffff;
    --error-container: #ffdad6;
    --on-error-container: #93000a;
    --primary-fixed: #dbe1ff;
    --primary-fixed-dim: #b3c5ff;
    --on-primary-fixed: #00174a;
    --on-primary-fixed-variant: #2a4386;
    --secondary-fixed: #ffe07f;
    --secondary-fixed-dim: #edc200;
    --on-secondary-fixed: #231b00;
    --on-secondary-fixed-variant: #564500;
    --tertiary-fixed: #82fc90;
    --tertiary-fixed-dim: #65df77;
    --on-tertiary-fixed: #002107;
    --on-tertiary-fixed-variant: #00531c;
    --background: #f8f9fa;
    --on-background: #191c1d;
    --surface-variant: #e1e3e4;

    /* Typography - Design Tokens */
    --font-display: 'Literata', serif;
    --font-body: 'Hanken Grotesk', sans-serif;

    --display-lg: 48px;
    --display-lg-line-height: 56px;
    --headline-lg: 32px;
    --headline-lg-line-height: 40px;
    --headline-lg-mobile: 28px;
    --headline-lg-mobile-line-height: 36px;
    --headline-md: 24px;
    --headline-md-line-height: 32px;
    --body-lg: 18px;
    --body-lg-line-height: 28px;
    --body-md: 16px;
    --body-md-line-height: 24px;
    --label-md: 14px;
    --label-md-line-height: 20px;
    --label-sm: 12px;
    --label-sm-line-height: 16px;

    /* Spacing */
    --spacing-base: 8px;
    --spacing-container-max: 1280px;
    --spacing-gutter: 24px;
    --spacing-margin-desktop: 40px;
    --spacing-margin-mobile: 16px;
    --spacing-stack-sm: 8px;
    --spacing-stack-md: 16px;
    --spacing-stack-lg: 32px;

    /* Shapes */
    --radius-sm: 0.125rem;
    --radius-md: 0.25rem;
    --radius-lg: 0.375rem;
    --radius-xl: 0.5rem;
    --radius-full: 9999px;
}

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

body {
    font-family: var(--font-body);
    font-size: var(--body-md);
    line-height: var(--body-md-line-height);
    color: var(--on-surface);
    background-color: var(--surface);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: var(--spacing-container-max);
    margin: 0 auto;
    padding: var(--spacing-gutter);
}

/* Header */
header {
    text-align: center;
    padding: var(--spacing-stack-lg) 0;
}

header h1 {
    font-family: var(--font-display);
    font-size: var(--display-lg);
    font-weight: 700;
    line-height: var(--display-lg-line-height);
    color: var(--primary);
    margin-bottom: var(--spacing-stack-sm);
    letter-spacing: -0.02em;
}

.subtitle {
    font-family: var(--font-body);
    font-size: var(--body-lg);
    color: var(--on-surface);
    opacity: 0.7;
}

/* Info Banner */
.info-banner {
    background: var(--tertiary-container);
    border: 1px solid var(--tertiary-fixed-dim);
    border-radius: var(--radius-lg);
    padding: var(--spacing-stack-md) var(--spacing-stack-lg);
    margin-bottom: var(--spacing-stack-lg);
}

.info-message {
    font-family: var(--font-body);
    font-size: var(--body-md);
    color: var(--on-tertiary);
    margin: 0;
    line-height: var(--body-md-line-height);
}

/* Form */
main {
    max-width: 768px;
    margin: 0 auto;
}

.form-section {
    background: var(--surface-container-lowest);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-lg);
    padding: var(--spacing-stack-lg);
    margin-bottom: var(--spacing-stack-lg);
}

.form-section h2 {
    font-family: var(--font-display);
    font-size: var(--headline-md);
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--spacing-stack-lg);
}

.form-group {
    margin-bottom: var(--spacing-stack-lg);
}

.form-group label {
    display: block;
    font-family: var(--font-body);
    font-size: var(--label-md);
    font-weight: 600;
    color: var(--on-surface);
    margin-bottom: var(--spacing-stack-sm);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group textarea,
.form-group select {
    width: 100%;
    font-family: var(--font-body);
    font-size: var(--body-md);
    color: var(--on-surface);
    background-color: var(--surface-container-low);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-md);
    padding: var(--spacing-stack-md);
    transition: all 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 17, 58, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-stack-lg);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-actions {
    text-align: center;
    padding: var(--spacing-stack-lg) 0;
}

.btn {
    display: inline-block;
    font-family: var(--font-body);
    font-size: var(--body-md);
    font-weight: 500;
    padding: var(--spacing-stack-md) var(--spacing-stack-lg);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    font-size: var(--label-md);
}

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

.btn-primary:hover {
    background-color: var(--primary-container);
    color: var(--on-primary-container);
}

.btn-secondary {
    background-color: var(--secondary-container);
    color: var(--on-secondary-container);
}

/* Success Message */
.success-message {
    background: var(--surface-container-lowest);
    border: 1px solid var(--surface-container);
    border-radius: var(--radius-lg);
    padding: var(--spacing-stack-lg);
    text-align: center;
}

.success-message h2 {
    font-family: var(--font-display);
    font-size: var(--headline-md);
    color: var(--tertiary);
    margin-bottom: var(--spacing-stack-md);
}

.success-message p {
    color: var(--on-surface);
    opacity: 0.8;
    line-height: var(--body-lg-line-height);
}

.success-subtext {
    margin: var(--spacing-stack-md) 0;
    font-family: var(--font-body);
    font-size: var(--body-md);
    color: var(--on-surface);
    opacity: 0.7;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: var(--spacing-stack-lg);
    right: var(--spacing-stack-lg);
    background: var(--primary-container);
    color: var(--on-primary-container);
    border: 1px solid var(--primary-fixed-dim);
    border-radius: var(--radius-md);
    padding: var(--spacing-stack-md) var(--spacing-stack-lg);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    max-width: 400px;
}

.toast-content {
    font-family: var(--font-body);
    font-size: var(--body-md);
    font-weight: 500;
}

.toast.fadeIn {
    animation: fadeInToast 0.5s ease-in;
}

.toast.fadeOut {
    animation: fadeOutToast 0.5s ease-in;
}

@keyframes fadeInToast {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeOutToast {
    from { opacity: 1; transform: translateY(0); }
    to { opacity: 0; transform: translateY(20px); }
}

@keyframes fadeInOut {
    0% { opacity: 1; transform: translateY(0); }
    70% { opacity: 1; transform: translateY(0); }
    100% { opacity: 0; transform: translateY(0); }
}

/* Optional Label */
.optional-label {
    font-size: var(--label-sm);
    color: var(--on-surface-variant);
    font-weight: 400;
}

.dashboard-link {
    margin-top: var(--spacing-stack-lg);
}

.dashboard-link a {
    display: inline-block;
    font-family: var(--font-body);
    font-size: var(--body-md);
    font-weight: 500;
    color: var(--primary);
    background: var(--primary-fixed);
    padding: var(--spacing-stack-md) var(--spacing-stack-lg);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all 0.2s ease;
}

.dashboard-link a:hover {
    background: var(--primary-fixed-dim);
    color: var(--on-primary-fixed-variant);
}

/* Footer */
footer {
    text-align: center;
    padding: var(--spacing-stack-lg) 0;
    color: var(--on-surface);
    opacity: 0.7;
    font-size: var(--label-sm);
    line-height: var(--label-sm-line-height);
}

/* Responsive Design */
@media (max-width: 768px) {
    header h1 {
        font-size: var(--headline-lg-mobile);
        line-height: var(--headline-lg-mobile-line-height);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .form-group {
        margin-bottom: var(--spacing-stack-md);
    }
}