/* ===== ALTLAND Theme — Master Stylesheet ===== */
@import url('variables.css');
@import url('typography.css');
@import url('components.css');
@import url('utilities.css');

/* ---- Reset ---- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    min-height: 100vh;
    background-color: var(--color-bg);
    overflow-x: hidden;
}

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

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

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

ul, ol {
    list-style: none;
}

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

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

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

/* ---- Sections ---- */
.section {
    padding: var(--sp-20) 0;
}

.section--alt {
    background-color: var(--color-bg-alt);
}

.section--dark {
    background-color: var(--color-bg-dark);
    color: var(--color-text-inverse);
}

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4 {
    color: var(--color-text-inverse);
}

.section__header {
    text-align: center;
    margin-bottom: var(--sp-12);
}

.section__title {
    margin-bottom: var(--sp-4);
}

.section__subtitle {
    color: var(--color-text-light);
    font-size: var(--text-lg);
    max-width: 600px;
    margin: 0 auto;
}

.section--dark .section__subtitle {
    color: var(--gray-400);
}

/* ---- Grid helpers ---- */
.grid {
    display: grid;
    gap: var(--sp-6);
}

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

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

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .grid-4,
    .grid-3,
    .grid-2 {
        grid-template-columns: 1fr;
    }
}

/* ---- Scroll animations ---- */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--duration-slow) var(--ease), transform var(--duration-slow) var(--ease);
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children */
.stagger > .fade-up:nth-child(2) { transition-delay: 80ms; }
.stagger > .fade-up:nth-child(3) { transition-delay: 160ms; }
.stagger > .fade-up:nth-child(4) { transition-delay: 240ms; }
.stagger > .fade-up:nth-child(5) { transition-delay: 320ms; }
.stagger > .fade-up:nth-child(6) { transition-delay: 400ms; }
.stagger > .fade-up:nth-child(7) { transition-delay: 480ms; }

/* ---- Skip-to-content (a11y) ---- */
.skip-link {
    position: absolute;
    top: -100%;
    left: var(--sp-4);
    background: var(--color-primary);
    color: var(--white);
    padding: var(--sp-2) var(--sp-4);
    border-radius: var(--radius);
    z-index: 9999;
    font-size: var(--text-sm);
}
.skip-link:focus {
    top: var(--sp-4);
}