/* ===================================================
   Chemify — Global & Navbar Styles
   =================================================== */

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

:root {
    --color-bg: #E6E2D3;
    --color-bg-scroll: #C9CBB8;
    --color-text: #4E5B47;
    --color-text-muted: #5F6F5B;
    --color-border: #6F7F63;
    --color-accent: #6F7F63;
    --font-family: 'Inter', sans-serif;
    --font-heading: 'Playfair Display', serif;
    --navbar-height: 72px;
    --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    background-image: radial-gradient(#6F7F6320 1px, transparent 1px);
    background-size: 12px 12px;
    color: var(--color-text);
    line-height: 1.6;
}

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

ul {
    list-style: none;
}

/* ---------- Navbar ---------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--navbar-height);
    z-index: 1000;
    background: var(--color-bg);
    transition:
        background var(--transition-smooth),
        box-shadow var(--transition-smooth);
}

.navbar--scrolled {
    background: var(--color-bg-scroll);
    box-shadow: 0 1px 12px rgba(0, 0, 0, 0.06);
}

.navbar__inner {
    max-width: 1200px;
    height: 100%;
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* ---------- Logo ---------- */
.navbar__logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.navbar__logo-icon {
    width: 34px;
    height: 34px;
}

.navbar__logo-text {
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--color-text);
}

/* ---------- Nav Links ---------- */
.navbar__links {
    display: flex;
    align-items: center;
    gap: 36px;
}

.navbar__link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text);
    position: relative;
    transition: opacity var(--transition-smooth);
}

.navbar__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--color-text);
    transition: width var(--transition-smooth);
}

.navbar__link:hover {
    opacity: 0.6;
}

.navbar__link:hover::after {
    width: 100%;
}

/* ---------- CTA Button ---------- */
.navbar__cta {
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    padding: 10px 24px;
    border: 1px solid #4E5B47;
    border-radius: 999px;
    color: #E6E2D3;
    background: #6F7F63;
    transition: background var(--transition-smooth), color var(--transition-smooth), transform 0.2s ease;
    cursor: pointer;
}

.navbar__cta:hover {
    background: #4E5B47;
    color: #E6E2D3;
    transform: translateY(-1px);
}

.navbar__cta:active {
    transform: translateY(0);
}

/* ---------- Hamburger ---------- */
.navbar__hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 38px;
    height: 38px;
    background: none;
    margin-right: 10px;
    border: none;
    cursor: pointer;
    padding: 6px;
    z-index: 1100;
}

.navbar__hamburger-line {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition:
        transform var(--transition-smooth),
        opacity var(--transition-smooth);
    transform-origin: center;
}

/* Hamburger → X animation */
.navbar__hamburger.is-active .navbar__hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.navbar__hamburger.is-active .navbar__hamburger-line:nth-child(2) {
    opacity: 0;
}

.navbar__hamburger.is-active .navbar__hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Mobile Overlay ---------- */
.mobile-overlay {
    position: fixed;
    inset: 0;
    z-index: 1050;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition:
        opacity var(--transition-smooth),
        visibility var(--transition-smooth);
}

.mobile-overlay.is-open {
    opacity: 1;
    visibility: visible;
}

.mobile-overlay__close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    cursor: pointer;
    border-radius: 50%;
    transition: background var(--transition-smooth), opacity var(--transition-smooth);
}

.mobile-overlay__close:hover {
    background: rgba(26, 26, 26, 0.08);
    opacity: 0.7;
}

.mobile-overlay__links {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 32px;
}

.mobile-overlay__link {
    font-size: 1.6rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--color-text);
    opacity: 0;
    transform: translateY(20px);
    transition:
        opacity 0.4s ease,
        transform 0.4s ease,
        color var(--transition-smooth);
}

.mobile-overlay__link:hover {
    opacity: 0.6;
}

/* Staggered entrance — each link delays a bit more */
.mobile-overlay.is-open .mobile-overlay__link:nth-child(1) {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.05s;
}

.mobile-overlay.is-open .mobile-overlay__link:nth-child(2) {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.1s;
}

.mobile-overlay.is-open .mobile-overlay__link:nth-child(3) {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.15s;
}

.mobile-overlay.is-open .mobile-overlay__link:nth-child(4) {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.2s;
}

.mobile-overlay.is-open .mobile-overlay__link:nth-child(5) {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.25s;
}

.mobile-overlay__cta {
    font-size: 1.2rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    padding: 14px 40px;
    border: 1.5px solid var(--color-border);
    border-radius: 6px;
    color: var(--color-text);
    opacity: 0;
    transform: translateY(20px);
    transition:
        opacity 0.4s ease,
        transform 0.4s ease,
        background var(--transition-smooth),
        color var(--transition-smooth);
}

.mobile-overlay__cta:hover {
    background: var(--color-accent);
    color: #fff;
}

.mobile-overlay.is-open .mobile-overlay__cta {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.3s;
}

/* ===================================================
   Hero Section
   =================================================== */

.hero {
    position: relative;
    width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: calc(var(--navbar-height) + 40px) 32px 80px;
    overflow: hidden;
    background: var(--color-bg);
}

/* Canvas background */
.hero__canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

/* Content block */
.hero__content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 720px;
    margin-bottom: 56px;
}

.hero__headline {
    font-family: Georgia, 'Times New Roman', serif;
    font-size: 4.5rem;
    font-weight: 400;
    letter-spacing: -0.02em;
    line-height: 1.1;
    color: var(--color-text);
    margin-bottom: 24px;
}

.hero__sub {
    font-family: var(--font-family);
    font-size: 1.1rem;
    font-weight: 400;
    line-height: 1.7;
    color: #444;
    max-width: 520px;
    margin: 0 auto 40px;
}

/* CTA group */
.hero__cta-group {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.hero__cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 52px;
    padding: 0 32px;
    font-weight: 500;
    border-radius: 999px;
    transition: background 0.3s, transform 0.3s;
}

.hero__cta--filled {
    background: #6F7F63;
    color: #E6E2D3;
    border: 1px solid #4E5B47;
}

.hero__cta--filled:hover {
    background: #4E5B47;
    transform: translateY(-2px);
}

.hero__cta--filled:active {
    transform: translateY(0);
}

.hero__cta--ghost {
    background: transparent;
    color: var(--color-text);
    border: none;
    padding: 14px 8px;
}

.hero__cta--ghost:hover {
    opacity: 0.55;
}

/* ---------- Element Tiles ---------- */
.hero__tiles {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    max-width: 800px;
    margin-bottom: 48px;
}

.hero__tile {
    width: 72px;
    height: 86px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(26, 26, 26, 0.15);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(4px);
    gap: 2px;
    animation: tileFadeIn 0.6s ease both;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.hero__tile:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
}

.hero__tile-number {
    font-size: 0.6rem;
    font-weight: 500;
    color: #999;
    letter-spacing: 0.03em;
}

.hero__tile-symbol {
    font-family: Georgia, 'Times New Roman', serif;
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--color-text);
    line-height: 1;
}

.hero__tile-name {
    font-size: 0.55rem;
    font-weight: 500;
    color: #777;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

@keyframes tileFadeIn {
    from {
        opacity: 0;
        transform: translateY(16px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ---------- Scroll Arrow ---------- */
.hero__scroll-arrow {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    opacity: 0.35;
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(10px);
    }
}

/* ===================================================
   Scroll Reveal Utility
   =================================================== */

[data-reveal] {
    opacity: 0;
    transition: opacity 0.8s ease, transform 0.8s ease;
}

[data-reveal="left"] {
    transform: translateX(-40px);
}

[data-reveal="right"] {
    transform: translateX(40px);
}

[data-reveal].is-visible {
    opacity: 1;
    transform: translateX(0) translateY(0);
}

[data-reveal="up"] {
    transform: translateY(30px);
}

/* ===================================================
   About Section
   =================================================== */

.about {
    padding: 120px 32px;
    background: var(--color-bg);
}

.about__inner {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

/* --- Text column --- */
.about__label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #888;
    margin-bottom: 16px;
}

.about__heading {
    font-family: Georgia, 'Times New Roman', serif;
    font-size: 2.6rem;
    font-weight: 400;
    letter-spacing: -0.01em;
    line-height: 1.15;
    color: var(--color-text);
    margin-bottom: 24px;
}

.about__desc {
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.75;
    color: #444;
    margin-bottom: 16px;
}

.about__link {
    display: inline-block;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text);
    margin-top: 8px;
    position: relative;
}

.about__link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--color-text);
    transition: width var(--transition-smooth);
}

.about__link:hover::after {
    width: 100%;
}

/* --- CSS Atom Model --- */
.about__atom-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
}

.about__atom {
    position: relative;
    width: 260px;
    height: 260px;
}

.about__nucleus {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 18px;
    height: 18px;
    background: var(--color-text);
    border-radius: 50%;
    transform: translate(-50%, -50%);
}

/* Shared orbit styles */
.about__orbit {
    position: absolute;
    top: 50%;
    left: 50%;
    border: 1px solid rgba(26, 26, 26, 0.18);
    border-radius: 50%;
    transform-style: preserve-3d;
}

.about__orbit--1 {
    width: 220px;
    height: 220px;
    margin-left: -110px;
    margin-top: -110px;
    transform: rotateX(70deg) rotateY(0deg);
    animation: orbitSpin1 6s linear infinite;
}

.about__orbit--2 {
    width: 200px;
    height: 200px;
    margin-left: -100px;
    margin-top: -100px;
    transform: rotateX(70deg) rotateY(60deg);
    animation: orbitSpin2 8s linear infinite;
}

.about__orbit--3 {
    width: 180px;
    height: 180px;
    margin-left: -90px;
    margin-top: -90px;
    transform: rotateX(70deg) rotateY(-60deg);
    animation: orbitSpin3 10s linear infinite;
}

/* Electrons */
.about__electron {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--color-text);
    border-radius: 50%;
    top: -4px;
    left: 50%;
    margin-left: -4px;
}

/* Orbit keyframes — each rotates the full orbit ring */
@keyframes orbitSpin1 {
    from {
        transform: rotateX(70deg) rotateY(0deg) rotateZ(0deg);
    }

    to {
        transform: rotateX(70deg) rotateY(0deg) rotateZ(360deg);
    }
}

@keyframes orbitSpin2 {
    from {
        transform: rotateX(70deg) rotateY(60deg) rotateZ(0deg);
    }

    to {
        transform: rotateX(70deg) rotateY(60deg) rotateZ(360deg);
    }
}

@keyframes orbitSpin3 {
    from {
        transform: rotateX(70deg) rotateY(-60deg) rotateZ(0deg);
    }

    to {
        transform: rotateX(70deg) rotateY(-60deg) rotateZ(360deg);
    }
}

/* ===================================================
   Features Section
   =================================================== */

.features {
    padding: 120px 32px;
    background: var(--color-bg);
}

.features__inner {
    max-width: 1100px;
    margin: 0 auto;
}

.features__heading {
    font-family: Georgia, 'Times New Roman', serif;
    font-size: 2.8rem;
    font-weight: 400;
    letter-spacing: -0.015em;
    line-height: 1.15;
    color: var(--color-text);
    text-align: center;
    margin-bottom: 64px;
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.features__card {
    padding: 1.5rem;
    border-radius: 12px;
    background: transparent;
    transition:
        background var(--transition-smooth),
        transform var(--transition-smooth),
        box-shadow var(--transition-smooth);
    cursor: default;
}

.features__card:hover {
    background: rgba(255, 255, 255, 0.6);
    transform: translateX(4px);
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
}

.features__icon {
    width: 80px;
    height: 80px;
    margin-bottom: 24px;
}

.features__card-title {
    font-family: Georgia, 'Times New Roman', serif;
    font-size: 1.4rem;
    font-weight: 400;
    color: var(--color-text);
    margin-bottom: 12px;
}

.features__card-desc {
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.7;
    color: #444;
}

/* ===================================================
   Periodic Table Teaser
   =================================================== */

.ptable {
    padding: 120px 32px;
    background: var(--color-bg);
}

.ptable__inner {
    max-width: 1100px;
    margin: 0 auto;
    text-align: center;
}

.ptable__heading {
    font-family: Georgia, 'Times New Roman', serif;
    font-size: 2.8rem;
    font-weight: 400;
    letter-spacing: -0.015em;
    line-height: 1.15;
    color: var(--color-text);
    margin-bottom: 48px;
}

.ptable__scroll-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 16px;
    margin-bottom: 40px;
}

.ptable__grid {
    display: grid;
    grid-template-columns: repeat(18, 44px);
    grid-template-rows: repeat(10, 50px);
    gap: 2px;
    justify-content: center;
    min-width: fit-content;
}

/* Element tile */
.ptable__tile {
    width: 44px;
    height: 50px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 1px solid #ddd;
    border-radius: 4px;
    background: #fff;
    cursor: pointer;
    gap: 1px;
    opacity: 0;
    transform: translateY(8px);
    transition:
        transform 0.2s ease,
        border-color 0.2s ease,
        box-shadow 0.2s ease;
}

.ptable__tile.is-shown {
    opacity: 1;
    transform: translateY(0);
    animation: ptileFadeIn 0.4s ease both;
}

.ptable__tile:hover {
    transform: scale(1.08);
    border-color: #999;
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.08);
    z-index: 5;
}

.ptable__tile-num {
    font-size: 0.5rem;
    font-weight: 500;
    color: #999;
    line-height: 1;
    align-self: flex-start;
    padding-left: 3px;
}

.ptable__tile-sym {
    font-family: Georgia, 'Times New Roman', serif;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1;
}

.ptable__tile-name {
    font-size: 0.42rem;
    font-weight: 500;
    color: #888;
    line-height: 1;
    letter-spacing: 0.02em;
    max-width: 42px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Category tints — very subtle */
.ptable__tile--am {
    background: #fdf5ed;
}

/* alkali metal */
.ptable__tile--ae {
    background: #faf3e4;
}

/* alkaline earth */
.ptable__tile--tm {
    background: #f5f5f5;
}

/* transition metal */
.ptable__tile--pt {
    background: #f0f3f5;
}

/* post-transition */
.ptable__tile--ml {
    background: #eef5f2;
}

/* metalloid */
.ptable__tile--nm {
    background: #f2f6f9;
}

/* nonmetal */
.ptable__tile--hl {
    background: #f7f1ee;
}

/* halogen */
.ptable__tile--ng {
    background: #eef1f8;
}

/* noble gas */
.ptable__tile--ln {
    background: #f5f0eb;
}

/* lanthanide */
.ptable__tile--ac {
    background: #f4eff1;
}

/* actinide */

/* Marker tiles for lanthanide / actinide refs */
.ptable__marker {
    width: 44px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.55rem;
    font-weight: 600;
    color: #aaa;
    letter-spacing: 0.02em;
}

@keyframes ptileFadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* CTA link */
.ptable__link {
    display: inline-block;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text);
    position: relative;
}

.ptable__link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--color-text);
    transition: width var(--transition-smooth);
}

.ptable__link:hover::after {
    width: 100%;
}

/* ===================================================
   Built For You — Personas
   =================================================== */

.personas {
    padding: 120px 32px;
    background: var(--color-bg);
}

.personas__inner {
    max-width: 1100px;
    margin: 0 auto;
    text-align: center;
}

.personas__label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #888;
    margin-bottom: 16px;
}

.personas__heading {
    font-family: Georgia, 'Times New Roman', serif;
    font-size: 2.8rem;
    font-weight: 400;
    letter-spacing: -0.015em;
    line-height: 1.15;
    color: var(--color-text);
    margin-bottom: 64px;
}

.personas__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    text-align: left;
}

.personas__card {
    padding: 1.5rem;
    border-radius: 12px;
    background: transparent;
    transition:
        background var(--transition-smooth),
        transform var(--transition-smooth),
        box-shadow var(--transition-smooth);
    cursor: default;
}

.personas__card:hover {
    background: rgba(255, 255, 255, 0.6);
    transform: translateX(4px);
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
}

.personas__icon {
    width: 80px;
    height: 80px;
    margin-bottom: 24px;
}

.personas__card-title {
    font-family: Georgia, 'Times New Roman', serif;
    font-size: 1.4rem;
    font-weight: 400;
    color: var(--color-text);
    margin-bottom: 12px;
}

.personas__card-desc {
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.7;
    color: #444;
}

/* ===================================================
   CTA Banner
   =================================================== */

.cta-banner {
    padding: 120px 32px;
    background: #1a1a1a;
    text-align: center;
}

.cta-banner__inner {
    max-width: 680px;
    margin: 0 auto;
}

.cta-banner__heading {
    font-family: Georgia, 'Times New Roman', serif;
    font-size: 3rem;
    font-weight: 400;
    letter-spacing: -0.015em;
    line-height: 1.15;
    color: #faf9f7;
    margin-bottom: 20px;
}

.cta-banner__sub {
    font-family: var(--font-family);
    font-size: 1.05rem;
    font-weight: 400;
    line-height: 1.7;
    color: #aaa;
    margin-bottom: 40px;
}

.cta-banner__btn {
    display: inline-block;
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    padding: 16px 40px;
    border-radius: 6px;
    background: #faf9f7;
    color: #1a1a1a;
    border: 1.5px solid #faf9f7;
    transition:
        background var(--transition-smooth),
        color var(--transition-smooth),
        transform 0.2s ease;
    cursor: pointer;
}

.cta-banner__btn:hover {
    background: transparent;
    color: #faf9f7;
    transform: translateY(-2px);
}

.cta-banner__btn:active {
    transform: translateY(0);
}

/* ===================================================
   Footer
   =================================================== */

.footer {
    background: #111;
    padding: 64px 32px 0;
}

.footer__inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding-bottom: 48px;
}

/* Brand */
.footer__logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.footer__logo-icon {
    width: 28px;
    height: 28px;
}

.footer__logo-text {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: #ccc;
}

.footer__tagline {
    font-size: 0.9rem;
    font-weight: 400;
    color: #666;
}

/* Nav */
.footer__links {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
}

.footer__link {
    font-size: 0.9rem;
    font-weight: 400;
    color: #888;
    transition: opacity var(--transition-smooth);
}

.footer__link:hover {
    opacity: 0.55;
}

/* Bottom bar */
.footer__bottom {
    border-top: 1px solid #222;
    padding: 24px 0;
    text-align: center;
    font-size: 0.85rem;
    color: #555;
}

/* ===================================================
   Responsive
   =================================================== */

@media (max-width: 768px) {

    .navbar__links,
    .navbar__cta {
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    padding: 10px 24px;
    border: 1px solid #4E5B47;
    border-radius: 999px;
    color: #E6E2D3;
    background: #6F7F63;
    transition: background var(--transition-smooth), color var(--transition-smooth), transform 0.2s ease;
    cursor: pointer;
}

    .navbar__hamburger {
        display: flex;
    }

    .navbar__inner {
        padding: 0 20px;
    }

    .hero__headline {
        font-size: 2.8rem;
    }

    .hero__sub {
        font-size: 1rem;
    }

    .hero__tile {
        width: 60px;
        height: 72px;
    }

    .hero__tile-symbol {
        font-size: 1.25rem;
    }

    .features__heading {
        font-size: 2.2rem;
    }

    .features__grid {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin: 0 auto;
    }

    .about__inner {
        grid-template-columns: 1fr;
        gap: 48px;
        text-align: center;
    }

    .about__heading {
        font-size: 2rem;
    }

    .about__atom {
        width: 200px;
        height: 200px;
    }

    .about__orbit--1 {
        width: 170px;
        height: 170px;
        margin-left: -85px;
        margin-top: -85px;
    }

    .about__orbit--2 {
        width: 150px;
        height: 150px;
        margin-left: -75px;
        margin-top: -75px;
    }

    .about__orbit--3 {
        width: 130px;
        height: 130px;
        margin-left: -65px;
        margin-top: -65px;
    }

    .ptable__heading {
        font-size: 2.2rem;
    }

    .ptable {
        padding: 100px 16px;
    }

    .personas__heading {
        font-size: 2.2rem;
    }

    .personas__grid {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin: 0 auto;
    }

    .cta-banner__heading {
        font-size: 2.2rem;
    }

    .footer__inner {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 32px;
    }

    .footer__brand {
        text-align: center;
    }

    .footer__logo {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .navbar__logo-text {
        font-size: 1.05rem;
    }

    .mobile-overlay__link {
        font-size: 1.35rem;
    }

    .hero__headline {
        font-size: 2.2rem;
    }

    .hero__tiles {
        gap: 8px;
    }

    .hero__tile {
        width: 54px;
        height: 66px;
    }

    .hero__tile-symbol {
        font-size: 1.1rem;
    }

    .hero__tile-name {
        font-size: 0.48rem;
    }

    .about {
        padding: 80px 20px;
    }

    .about__heading {
        font-size: 1.75rem;
    }

    .features {
        padding: 80px 20px;
    }

    .features__heading {
        font-size: 1.8rem;
    }

    .ptable {
        padding: 80px 12px;
    }

    .ptable__heading {
        font-size: 1.8rem;
    }

    .personas {
        padding: 80px 20px;
    }

    .personas__heading {
        font-size: 1.8rem;
    }

    .cta-banner {
        padding: 80px 20px;
    }

    .cta-banner__heading {
        font-size: 1.8rem;
    }

    .footer {
        padding: 48px 20px 0;
    }
}

/* Typography System */

h1, h2, h3, h4, h5, h6, .hero__headline, .about__heading, .features__heading, .ptable__heading, .personas__heading, .cta-banner__heading {
    font-family: var(--font-heading);
    color: var(--color-text);
    letter-spacing: 0.02em;
}

p, .about__desc, .features__card-desc, .personas__card-desc, .hero__sub, .cta-banner__sub {
    font-family: var(--font-family);
    color: var(--color-text-muted);
}


/* Card Redesign */

.features__card, .personas__card {
    background: #C9CBB8 !important;
    border: 1px solid #6F7F63 !important;
    border-radius: 20px !important;
    padding: 32px !important;
    position: relative;
    box-shadow: none !important;
}

.features__card::before, .personas__card::before {
    content: "";
    position: absolute;
    inset: 8px;
    border: 1px solid #6F7F63;
    border-radius: 16px;
    opacity: 0.4;
    pointer-events: none;
    z-index: 1;
}

.features__card > *, .personas__card > * {
    position: relative;
    z-index: 2;
}

/* Global Buttons Redesign */
.navbar__cta, .hero__cta--filled, .cta-banner__btn, .ptable__link, .mobile-overlay__cta {
    background: #6F7F63 !important;
    color: #E6E2D3 !important;
    border-radius: 999px !important;
    padding: 12px 24px !important;
    border: 1px solid #4E5B47 !important;
    transition: background 0.3s ease, transform 0.2s ease !important;
    text-transform: none;
    box-shadow: none !important;
}

.navbar__cta:hover, .hero__cta--filled:hover, .cta-banner__btn:hover, .ptable__link:hover, .mobile-overlay__cta:hover {
    background: #4E5B47 !important;
}

.hero__cta--ghost, .about__link {
    background: transparent !important;
    color: #4E5B47 !important;
    border-radius: 999px !important;
    padding: 12px 24px !important;
    border: 1px solid #6F7F63 !important;
    transition: background 0.3s ease, transform 0.2s ease !important;
}

.hero__cta--ghost:hover, .about__link:hover {
    background: rgba(111, 127, 99, 0.1) !important;
}

/* Image / Hero Frame */
.hero__canvas, .about__atom-wrap {
    border-radius: 120px 120px 20px 20px !important;
    overflow: hidden !important;
    border: 2px solid #6F7F63 !important;
    box-shadow: none !important;
}

/* Dividers */
.divider {
  height: 1px;
  background: #6F7F63;
  opacity: 0.3;
  margin: 40px 0;
}