/* elmtree.ai – Shared Stylesheet */

/* --- Variables --- */
:root {
    --white: #F4F2EE;
    --black: #1E1C1A;
    --accent: #FF4466;
    --gray-light: #EBE8E3;
    --gray-text: #595652;
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'DM Sans', sans-serif;
    --grid-max: 1600px;
    --grid-gap: clamp(1rem, 3vw, 3rem);
    --side-pad: clamp(1.25rem, 5vw, 4rem);
}

/* --- Reset --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
    font-family: var(--font-body);
    font-weight: 400;
    color: var(--black);
    background-color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
    border-top: 4px solid var(--accent);
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; border-radius: 2px; }

/* --- Grid --- */
.grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--grid-gap);
    max-width: var(--grid-max);
    margin: 0 auto;
    padding: 0 var(--side-pad);
}

/* --- Navigation --- */
.nav {
    padding: 2rem var(--side-pad);
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    max-width: var(--grid-max);
    margin: 0 auto;
    border-bottom: 2px solid var(--black);
}
.nav__brand {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 2rem;
    display: flex;
    align-items: baseline;
    gap: 0.125rem;
    letter-spacing: -0.04em;
    text-transform: uppercase;
    z-index: 1001;
    position: relative;
}
.nav__brand .dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    background: var(--accent);
    border-radius: 50%;
    margin-left: 2px;
}
.nav__toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
    position: relative;
}
.nav__toggle-line {
    display: block;
    width: 28px;
    height: 2px;
    background: var(--black);
    margin: 6px 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    border-radius: 1px;
}
.nav__toggle.active .nav__toggle-line:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav__toggle.active .nav__toggle-line:nth-child(2) { opacity: 0; }
.nav__toggle.active .nav__toggle-line:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
.nav__links {
    display: flex;
    align-items: center;
    gap: clamp(1rem, 2.5vw, 2.5rem);
    list-style: none;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
}
.nav__links a {
    font-family: var(--font-heading);
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--black);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    transition: color 0.2s ease;
}
.nav__links a:hover { color: var(--accent); }
.nav__links a.active { color: var(--accent); }

/* --- Footer --- */
.footer {
    padding-top: 6rem;
    padding-bottom: 4rem;
    background: var(--black);
    color: var(--white);
}
.footer__brand {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 4rem;
    text-transform: uppercase;
    display: inline-flex;
    align-items: baseline;
}
.footer__brand .dot {
    background: var(--accent);
    border-radius: 50%;
    display: inline-block;
    width: 14px;
    height: 14px;
    margin-left: 2px;
}
.footer__columns {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 4rem;
}
.footer__col-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1rem;
    color: var(--accent);
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}
.footer__col a {
    display: block;
    color: var(--white);
    margin-bottom: 0.75rem;
    font-weight: 400;
    transition: opacity 0.2s;
    opacity: 0.8;
}
.footer__col a:hover { opacity: 1; }

/* --- CTA link (→ Text with underline slide) --- */
.cta-link {
    display: inline-block;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding-bottom: 0.5rem;
    position: relative;
}
.cta-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.cta-link:hover::after { width: 100%; }

/* --- Fade-in animation --- */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease-out;
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .footer__columns { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 1300px) {
    .nav { align-items: center; padding: 1.5rem var(--side-pad); }
    .nav__toggle { display: block; }
    .nav__links {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 1000;
        background: var(--white);
        display: flex;
        flex-direction: column;
        flex-wrap: nowrap;
        justify-content: center;
        align-items: center;
        gap: 0;
        margin: 0;
        padding: 0;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.35s ease;
    }
    .nav__links.open {
        opacity: 1;
        pointer-events: auto;
    }
    .nav__links li { width: 100%; max-width: 400px; text-align: center; }
    .nav__links a {
        display: block;
        padding: 1rem 1.5rem;
        font-size: 0.8125rem;
        letter-spacing: 0.1em;
        border-bottom: 1px solid var(--gray-light);
        white-space: nowrap;
    }
    .nav__links li:first-child a { border-top: 1px solid var(--gray-light); }
    .nav__links a.active { color: var(--accent); }
}
@media (max-width: 600px) {
    .footer { padding-top: 3rem; padding-bottom: 2rem; }
    .footer__brand { font-size: 2rem; margin-bottom: 2rem; }
    .footer__columns { grid-template-columns: 1fr; padding-top: 2rem; }
}