@import url('./variables.css');
@import url('./components/buttons.css');
@import url('./components/header.css');
@import url('./components/footer.css');
@import url('./components/cards.css');

/* Footer layout (project requirement: styles in main.css) */
.footer__inner {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 32px;
    align-items: start;
}

.footer__title {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 12px;
}

.footer__nav,
.footer__stack {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer__link {
    color: var(--color-light-blue);
    transition: color 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.footer__link:hover {
    color: var(--color-fresh-green);
}

.footer__text {
    color: var(--color-light-blue);
    line-height: 1.5;
}

@media (max-width: 900px) {
    .footer__inner {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 560px) {
    .footer__inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer__nav,
    .footer__stack {
        align-items: center;
    }
}

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

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-body);
    color: var(--color-white);
    background-color: var(--bg-body);
    line-height: var(--line-height-base);
    min-height: 100vh;
}

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

a:hover,
a:focus-visible {
    color: var(--color-fresh-green-light);
}

img {
    max-width: 100%;
    display: block;
}

main {
    min-height: 60vh;
    /* padding-top: var(--space-3xl); */
}

.container {
    width: min(1200px, calc(100% - var(--space-xl)));
    margin: 0 auto;
}

section {
    position: relative;
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
}

.link-inline {
    color: var(--color-fresh-green);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
}

.link-inline::after {
    content: '›';
    font-size: 1.1em;
    transition: transform var(--transition-fast);
}

.link-inline:hover::after {
    transform: translateX(4px);
}

.page-placeholder {
    padding: var(--space-4xl) 0;
    text-align: center;
    color: var(--color-light-blue);
}

@media (max-width: 768px) {
    /* main {
        padding-top: var(--space-2xl);
    } */

    .container {
        width: min(100%, calc(100% - var(--space-lg)));
    }
}

/* Contacts page */
.section--contacts {
    padding: 72px 0;
}

.contacts-hero {
    max-width: 860px;
}

.contacts-hero h1 {
    margin: 10px 0 12px;
}

.contacts-hero p {
    color: var(--color-light-blue);
    margin: 0;
}

.contacts-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.contact-card {
    /* use same look as cards on home page ("Почему G-ON") */
    background: var(--bg-panel);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    padding: 24px;
    color: var(--color-white);
    box-shadow: var(--shadow-card);
    transition: transform 0.3s ease, background 0.3s ease, box-shadow 0.3s ease, border-color var(--transition-base);
}

.contact-card--full {
    grid-column: auto;
}

.contact-card__title {
    margin: 0 0 14px;
    font-size: 1.1rem;
    color: var(--color-white);
}

.contact-card__items {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.contact-item {
    color: var(--color-white);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: transform var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.contact-item:hover,
.contact-item:focus-visible {
    color: var(--color-fresh-green);
    border-color: rgba(76, 172, 51, 0.55);
    transform: translateY(-1px);
}

.contact-item--text {
    margin: 0;
    color: var(--color-gray-200);
}

.contacts-sep {
    margin: 0 8px;
    color: rgba(255, 255, 255, 0.35);
}

.contacts-other {
    margin-top: 28px;
}

.contacts-other__title {
    font-family: var(--font-heading);
    font-size: clamp(1.4rem, 3vw, 2rem);
    margin: 0 0 16px;
    color: var(--color-white);
}

.contacts-links {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.contacts-link {
    padding: 14px 16px;
    border-radius: var(--radius-md);
    background: var(--bg-panel);
    border: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--color-white);
    transition: border-color var(--transition-fast), transform var(--transition-fast), color var(--transition-fast), background var(--transition-base);
    box-shadow: var(--shadow-card);
}

.contacts-link:hover,
.contacts-link:focus-visible {
    color: var(--color-fresh-green);
    border-color: rgba(76, 172, 51, 0.55);
    transform: translateY(-1px);
}

.contacts-link__note {
    color: var(--color-gray-200);
}

@media (max-width: 768px) {
    .contacts-grid {
        grid-template-columns: 1fr;
    }

    .contacts-links {
        grid-template-columns: 1fr;
    }
}

.error-page {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-4xl) 0;
}

.error-page__inner {
    width: min(600px, 100%);
    margin: 0 auto;
}

.error-page__code {
    font-size: clamp(4rem, 12vw, 7.5rem);
    font-weight: 700;
    color: var(--color-fresh-green);
    line-height: 1;
    margin-bottom: 16px;
}

.error-page__title {
    font-size: clamp(1.5rem, 5vw, 2rem);
    margin-bottom: 16px;
}

.error-page__text {
    color: var(--color-light-blue);
    margin-bottom: 32px;
}

.error-page__actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

@media (max-width: 480px) {
    .error-page__actions {
        flex-direction: column;
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.animate-visible {
    opacity: 1;
    transform: translateY(0);
}

.animate-delay-1 { transition-delay: 0.1s; }
.animate-delay-2 { transition-delay: 0.2s; }
.animate-delay-3 { transition-delay: 0.3s; }
.animate-delay-4 { transition-delay: 0.4s; }