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

:root {
    --color-primary: #3b82f6;
    --color-primary-dark: #2563eb;
    --color-secondary: #6b7280;
    --color-background: #f9fafb;
    --color-surface: #ffffff;
    --color-border: #d1d5db;
    --color-border-hover: #9ca3af;
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-success: #22c55e;
    --color-error: #ef4444;
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 0.75rem;
    --space-lg: 1rem;
    --space-xl: 1.5rem;
    --space-2xl: 2rem;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--color-text);
    background: var(--color-background);
}

/* Navigation */
.nav {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-lg) var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav__brand {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
}

.nav__links {
    display: flex;
    gap: var(--space-lg);
    align-items: center;
}

.nav__link {
    color: var(--color-text-light);
    text-decoration: none;
    transition: all 0.15s ease-out;
    padding: var(--space-sm) var(--space-md);
    border-radius: 0.375em;
}

.nav__link:hover {
    color: var(--color-primary);
    background: rgba(59, 130, 246, 0.05);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-xl);
}

/* Hero Section */
.hero {
    text-align: center;
    padding: var(--space-2xl) 0;
}

.hero__title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-lg);
}

.hero__subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin-bottom: var(--space-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero__actions {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border-radius: 0.375em;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
    cursor: pointer;
    transition: all 0.15s ease-out;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-color: var(--color-border-hover);
}

.btn:active {
    transform: scale(0.98) translateY(0);
}

.btn--primary {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #ffffff;
}

.btn--primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
}

.btn--secondary {
    background: var(--color-surface);
    border-color: var(--color-border);
    color: var(--color-text);
}

.btn--block {
    width: 100%;
    justify-content: center;
}

/* Section */
.section__title {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-text);
    text-align: center;
    margin-bottom: var(--space-2xl);
}

/* Features Section */
.features {
    padding: var(--space-2xl) 0;
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
}

.feature-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 0.5em;
    padding: var(--space-xl);
    transition: all 0.2s ease-out;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    border-color: var(--color-border-hover);
}

.feature-card__icon {
    width: 3rem;
    height: 3rem;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 0.5em;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
    color: var(--color-primary);
}

.feature-card__title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.feature-card__desc {
    color: var(--color-text-light);
    line-height: 1.6;
}

/* CTA Section */
.cta {
    text-align: center;
    padding: var(--space-2xl) 0;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 0.75em;
    margin: var(--space-2xl) 0;
}

.cta__title {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.cta__text {
    color: var(--color-text-light);
    margin-bottom: var(--space-xl);
}

/* Forms */
.form {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 0.75em;
    padding: var(--space-2xl);
    max-width: 450px;
    margin: var(--space-2xl) auto;
}

.form__title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
    text-align: center;
}

.form__subtitle {
    color: var(--color-text-light);
    margin-bottom: var(--space-2xl);
    text-align: center;
}

.form__group {
    margin-bottom: var(--space-lg);
}

.form__label {
    display: block;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
    font-weight: 500;
}

.form__input {
    width: 100%;
    padding: var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: 0.375em;
    font-size: 0.875rem;
    color: var(--color-text);
    background: var(--color-surface);
    transition: all 0.15s ease-out;
}

.form__input:hover {
    border-color: var(--color-border-hover);
}

.form__input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.form__error {
    color: var(--color-error);
    font-size: 0.75rem;
    margin-top: var(--space-xs);
    display: none;
}

.form__error.active {
    display: block;
}

.form__success {
    color: var(--color-success);
    font-size: 0.875rem;
    text-align: center;
    margin-bottom: var(--space-lg);
    padding: var(--space-md);
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    border-radius: 0.375em;
    display: none;
}

.form__success.active {
    display: block;
}

.form__link {
    text-align: center;
    margin-top: var(--space-lg);
    color: var(--color-text-light);
}

.form__link a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.15s ease-out;
}

.form__link a:hover {
    opacity: 0.8;
}

/* Dashboard */
.dashboard {
    padding: var(--space-xl) 0;
}

.dashboard__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-2xl);
}

.dashboard__title {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-text);
}

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 0.5em;
    padding: var(--space-xl);
    margin-bottom: var(--space-xl);
    transition: all 0.2s ease-out;
}

.card:hover {
    border-color: var(--color-border-hover);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.card__title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-lg);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
}

.info-item {
    padding: var(--space-md);
    background: var(--color-background);
    border-radius: 0.375em;
}

.info-item__label {
    font-size: 0.75rem;
    color: var(--color-text-light);
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.info-item__value {
    font-size: 1rem;
    color: var(--color-text);
    font-weight: 500;
}

/* Table */
.table {
    width: 100%;
    border-collapse: collapse;
}

.table thead {
    background: var(--color-background);
}

.table th {
    padding: var(--space-md);
    text-align: left;
    font-weight: 600;
    color: var(--color-text);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--color-border);
}

.table td {
    padding: var(--space-md);
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border);
}

.table tbody tr {
    transition: background 0.15s ease-out;
}

.table tbody tr:hover {
    background: rgba(0, 0, 0, 0.02);
}

/* Badge */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-xs) var(--space-sm);
    border-radius: 0.25em;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge--success {
    background: rgba(34, 197, 94, 0.1);
    color: #16a34a;
}

.badge--warning {
    background: rgba(245, 158, 11, 0.1);
    color: #d97706;
}

/* Footer */
.footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    margin-top: var(--space-2xl);
}

.footer__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-xl);
    text-align: center;
}

.footer__text {
    color: var(--color-text-light);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero__title {
        font-size: 1.75rem;
    }

    .hero__subtitle {
        font-size: 1rem;
    }

    .hero__actions {
        flex-direction: column;
        width: 100%;
    }

    .hero__actions .btn {
        width: 100%;
        justify-content: center;
    }

    .nav__container {
        flex-direction: column;
        gap: var(--space-lg);
    }

    .nav__links {
        width: 100%;
        justify-content: center;
    }

    .features__grid {
        grid-template-columns: 1fr;
    }

    .dashboard__header {
        flex-direction: column;
        gap: var(--space-lg);
        align-items: flex-start;
    }

    .info-grid {
        grid-template-columns: 1fr;
    }

    .table {
        font-size: 0.75rem;
    }

    .table th,
    .table td {
        padding: var(--space-sm);
    }
}