*,
*::before,
*::after {
    box-sizing: border-box;
}

* {
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    min-height: 100vh;
    line-height: 1.6;
    font-family: var(--font-body);
    font-weight: var(--font-weight-regular);
    color: var(--color-text-body);
    background-color: var(--color-bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img,
picture,
video,
canvas,
svg {
    display: block;
    max-width: 100%;
    height: auto;
}

input,
button,
textarea,
select {
    font: inherit;
    color: inherit;
}

button {
    cursor: pointer;
    background: none;
    border: none;
}

a {
    color: inherit;
    text-decoration: none;
}

ul,
ol {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    color: var(--color-text-heading);
}

h1 {
    font-size: 3.5rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.75rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    color: var(--color-text-body);
}

.container {
    width: 100%;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

.container--narrow {
    max-width: var(--container-narrow);
}

.section {
    padding-top: var(--section-padding-mobile);
    padding-bottom: var(--section-padding-mobile);
}

@media (min-width: 768px) {
    .section {
        padding-top: var(--section-padding);
        padding-bottom: var(--section-padding);
    }
}

.site-content {
    position: relative;
    background-color: var(--color-bg-primary);
}

.section__header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.section__title {
    font-size: clamp(1.75rem, 4vw, 2.25rem);
    margin-bottom: var(--space-sm);
}

.section__subtitle {
    display: block;
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
}

.text-center {
    text-align: center;
}

.text-primary {
    color: var(--color-primary);
}

.text-muted {
    color: var(--color-text-muted);
}

.flex {
    display: flex;
}

.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.flex-col {
    flex-direction: column;
}

.gap-sm {
    gap: var(--space-sm);
}

.gap-md {
    gap: var(--space-md);
}

.gap-lg {
    gap: var(--space-lg);
}

.grid {
    display: grid;
    gap: var(--space-lg);
}

.grid-2 {
    grid-template-columns: 1fr;
}

.grid-3 {
    grid-template-columns: 1fr;
}

@media (min-width: 768px) {
    .grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 0.5rem 1.5rem;
    font-family: var(--font-body);
    font-weight: var(--font-weight-medium);
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    transition: all var(--transition-fast);
    text-decoration: none;
    border: 1px solid transparent;
}

.btn--primary {
    background-color: var(--color-text-heading);
    color: var(--color-bg-surface);
}

.btn--primary:hover {
    background-color: var(--color-text-body);
}

.btn--outline {
    background-color: transparent;
    border-color: var(--color-text-heading);
    color: var(--color-text-heading);
}

.btn--outline:hover {
    background-color: var(--color-text-heading);
    color: var(--color-bg-surface);
}

.btn--link {
    background: transparent;
    padding: 0;
    border: none;
    color: var(--color-text-heading);
    font-size: 0.85rem;
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.05em;
    position: relative;
}

.btn--link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 1px;
    background: currentColor;
    opacity: 0.3;
    transition: opacity var(--transition-fast);
}

.btn--link:hover::after {
    opacity: 1;
}

.card {
    background-color: var(--color-bg-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--transition-normal);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card__content {
    padding: var(--space-md);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp var(--transition-smooth) forwards;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}