/* Design tokens */
:root {
    --bg: #f8f9fa;
    --surface: #ffffff;
    --text: #222222;
    --muted: #555555;
    --accent: #bfa14a;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
}

html,
body,
.container { box-sizing: border-box; }

html,
body {
    width: 100%;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: "Outfit", sans-serif;
    font-size: 18px;
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 32px;
}

h1, h2, h3, h4, h5, h6 {
    font-family: "Outfit", sans-serif;
    color: var(--text);
    letter-spacing: 0.5px;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover { color: var(--text); }

/* Header/Nav */
.header {
    background: var(--surface);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    width: 100%;
}

.nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 32px;
    position: relative;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-logo { height: 80px; width: auto; }

.nav-title { font-size: 1.2rem; font-weight: 600; margin-left: 8px; }

.nav-links { display: flex; gap: 32px; }

.nav-links a {
    font-family: "Outfit", sans-serif;
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--text);
    opacity: 0.85;
    letter-spacing: 0.5px;
}

.nav-links a:hover { color: var(--accent); opacity: 1; }

/* Hamburger */
.hamburger {
    display: none;
    width: 42px;
    height: 42px;
    border: 1px solid #e9e9e9;
    border-radius: 8px;
    background: var(--surface);
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 6px;
}
.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text);
}

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    background: var(--surface);
    padding: 40px 0 24px 0;
}

.container.hero-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    max-width: 1100px;
    margin: 0 auto;
}

.hero-content {
    flex: 1;
    max-width: 600px;
    padding: 0 16px;
}

.hero-title { font-size: 2.6rem; font-weight: 800; margin-bottom: 12px; color: var(--text); letter-spacing: 0.5px; }

.hero-sub { color: var(--muted); margin: 8px 0 16px; max-width: 640px; }

.hero-bullets {
    margin: 18px 0 18px 0;
    padding: 0;
    list-style: none;
}

.hero-bullets li {
    font-size: 1.15rem;
    color: #444;
    margin-bottom: 10px;
    position: relative;
    padding-left: 24px;
}

.hero-bullets li:before {
    content: '•';
    color: #bfa14a;
    position: absolute;
    left: 0;
    font-size: 1.3em;
    top: 0;
}

.cta-btn {
    background: var(--accent);
    color: #fff;
    font-weight: bold;
    border: none;
    border-radius: 30px;
    padding: 16px 40px;
    font-size: 1.1rem;
    transition: background 0.2s, color 0.2s;
    box-shadow: var(--shadow-sm);
    justify-content: center;

}

.cta-btn:hover {
    background: #222;
    color: #fff;
}

.hero-image {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 320px;
}

.hero-image img { width: 320px; max-width: 80vw; border-radius: 18px; box-shadow: var(--shadow-lg); background: #eee; }

.section { background: var(--bg); padding: 70px 0 50px 0; max-width: 1200px; margin: 0 auto; scroll-margin-top: 90px; }

.section-title { font-size: 2.2rem; margin-bottom: 18px; color: var(--text); text-align: center; }

.section-desc { color: var(--muted); text-align: center; max-width: 700px; margin: 0 auto 40px auto; font-size: 1.1rem; }

.coregrade-advantage {
    background: none;
    padding: 0;
}

.coregrade-card-box {
    background: #f3f4f6;
    border-radius: 18px;
    box-shadow: 0 2px 16px rgba(191, 161, 74, 0.07);
    padding: 48px 32px;
    margin: 0 auto 40px auto;
    max-width: 100%;
}

.coregrade-feather {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
}

.coregrade-feather svg {
    width: 32px;
    height: 32px;
    color: #bfa14a;
    stroke: #bfa14a;
}

.coregrade-callout {
    background: #f5f6fa;
    border-left: 6px solid #bfa14a;
    font-size: 1.15rem;
    color: #222;
    margin: 32px 0 0 0;
    padding: 24px 32px;
    font-style: italic;
    border-radius: 8px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.collections-grid {
    display: flex;
    flex-wrap: nowrap;
    justify-content: center;
    gap: 40px;
}

.collection-card {
    background: var(--surface);
    border-radius: 18px;
    box-shadow: var(--shadow-md);
    padding: 32px 24px;
    flex: 1 1 0;
    max-width: 340px;
    min-width: 280px;
    text-align: center;
    transition: transform 0.2s;
}

.collection-card:hover { transform: translateY(-8px) scale(1.03); box-shadow: var(--shadow-lg); }

.collection-img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 18px;
    background: #f5f5f5;
}

.collection-card h3 { margin: 24px 0 12px; }
.collection-desc { padding: 0 16px; line-height: 1.6; color: #444; min-height: 80px; }

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    align-items: stretch;
}

/* Spec cards */
.spec-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px;
    margin-top: 16px;
}

.spec-card {
    background: var(--surface);
    border: 1px solid #ececec;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    padding: 24px 20px;
    max-width: 320px;
    text-align: center;
    position: relative;
}

.spec-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent);
    border-top-left-radius: 16px;
    border-top-right-radius: 16px;
}

.spec-icon { display: flex; align-items: center; justify-content: center; margin-bottom: 10px; }
.spec-icon svg { width: 28px; height: 28px; color: var(--accent); stroke: var(--accent); }
.spec-desc { color: var(--muted); margin: 8px 0 0; font-size: 0.98rem; }

/* Subtle section separator */
.section { position: relative; }
.section:not(:first-of-type)::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, rgba(0,0,0,0), rgba(0,0,0,0.06), rgba(0,0,0,0));
}

/* Scroll reveal */
.reveal-on-scroll { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal-on-scroll.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
    .reveal-on-scroll { transition: none; }
}

/* Features intro + swatches */
.features-intro {
    display: flex;
    align-items: flex-start;
    gap: 48px;
    margin-top: 48px;
}

.features-text { flex: 1; }

.swatch-list {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
    justify-content: center;
}

.swatch-card {
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 16px;
    background: var(--surface);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.swatch-img {
    width: 160px;
    height: 160px;
    object-fit: cover;
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
}

.swatch-label {
    margin-top: 8px;
    font-size: 0.9rem;
    color: var(--muted);
}

.section-note {
    text-align: center;
    color: #444;
    font-size: 1rem;
    margin: 32px 0;
}

.feature-card {
    background: var(--surface);
    border-radius: 16px;
    padding: 28px 22px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
}

.feature-icon svg { width: 32px; height: 32px; color: var(--accent); stroke: var(--accent); }

.footer { background: #f5f6fa; color: #888; text-align: center; padding: 40px 0 20px 0; font-size: 1rem; }

.contact { background: var(--surface); text-align: center; }

.contact-link { color: var(--accent); font-weight: bold; font-size: 1.2rem; text-decoration: none; }

@media (max-width: 900px) {

    .collections-grid {
        flex-direction: column;
        align-items: center;
    }

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

    .spec-grid { flex-direction: column; align-items: center; }

    .features-intro {
        flex-direction: column;
        gap: 24px;
        margin-top: 24px;
    }

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

    .hero-content,
    .hero-image {
        padding: 0 10vw;
    }

    .nav-brand {
        flex-direction: column;
        gap: 12px;
    }
}

@media (max-width: 1100px) {
    .collections-grid {
        flex-wrap: wrap;
    }

    .collection-card {
        width: 100%;
        flex: 1 1 100%;
        max-width: 400px;
        margin: 0 auto;
    }
}

@media (max-width: 700px) {
    .container {
        max-width: 400px !important;
        margin: 0 auto !important;
        padding-left: 12px !important;
        padding-right: 12px !important;
        box-sizing: border-box;
        text-align: center;
    }

    .header {
        padding: 0;
    }

    .nav { flex-direction: row; align-items: center; padding: 10px 8px; }

    .nav-brand {
        flex-direction: row;
        align-items: center;
        gap: 0;
    }

    .nav-logo { height: 40px; margin-right: 0; }

    .nav-title { display: none !important; }

    .hamburger { display: flex; }

    .nav-links {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        width: 100%;
        background: var(--surface);
        box-shadow: var(--shadow-md);
        flex-direction: column;
        gap: 0;
        padding: 0;
        z-index: 150;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        font-size: 1rem;
        padding: 16px 0;
        border-bottom: 1px solid #eee;
        width: 100%;
        text-align: left;
        padding-left: 24px;
    }

    .hero {
        flex-direction: column;
        padding: 32px 0 16px 0;
        min-height: unset;
        align-items: center;
        justify-content: center;
    }

    .container.hero-container {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        padding: 0 0 0 0;
    }

    .hero-content {
        max-width: 100%;
        padding: 0 4vw;
        text-align: center;
        margin-top: 24px;
    }

    .hero-title {
        font-size: 1.35rem;
        text-align: center;
        font-weight: 700;
        margin-bottom: 18px;
    }

    .hero-bullets {
        margin: 24px 0 24px 0;
        padding: 0;
        list-style: none;
        text-align: center;
        display: block;
    }

    .hero-bullets li {
        font-size: 1rem;
        color: #444;
        margin-bottom: 10px;
        position: relative;
        padding-left: 20px;
    }

    .hero-bullets li:before {
        font-size: 1.1em;
    }

    .hero-image {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .hero-image img {
        width: 70vw;
        max-width: 300px;
        min-width: 0;
        display: block;
        margin: 0 auto;
        border-radius: 18px;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.10);
        background: #eee;
    }

    .cta-btn {
        font-size: 1.1rem;
        padding: 16px 0;
        width: 100%;
        max-width: 320px;
        border-radius: 30px;
        margin: 24px auto 0 auto;
        display: block;
    }

    .section {
        padding: 36px 0 24px 0;
        text-align: center;
    }

    .section-title {
        font-size: 1.3rem;
        text-align: center;
    }

    .section-desc {
        font-size: 1rem;
        padding: 0 2vw;
        text-align: center;
    }

    .collections-grid {
        flex-direction: column;
        gap: 24px;
        align-items: center;
    }

    .collection-card {
        max-width: 100%;
        min-width: 0;
        width: 100%;
        margin: 0 auto;
        padding: 20px 8px;
        text-align: center;
    }

    .collection-img {
        height: 160px;
        display: block;
        margin: 0 auto 16px auto;
    }

    .features-grid {
        display: grid !important;
        grid-template-columns: 1fr !important;
        gap: 24px !important;
        align-items: stretch !important;
    }

    .feature-card {
        max-width: 100%;
        min-width: 0;
        width: 100%;
        margin: 0 auto;
        padding: 18px 8px;
        text-align: center;
    }

    .coregrade-card-box {
        padding: 24px 8px;
        text-align: center;
    }

    .coregrade-callout {
        font-size: 1rem;
        padding: 16px 8px;
        text-align: center;
    }

    .contact-link,
    .cta-btn {
        font-size: 1rem;
        padding: 12px 24px;
        display: inline-block;
        margin: 0 auto;
    }

    .about .section-desc {
        font-size: 1rem;
        text-align: center;
    }

    /* Technology/Features Section mobile tweaks */
    .features>.container>div[style*='display: flex'] {
        flex-direction: column !important;
        align-items: center !important;
        gap: 0 !important;
    }

    .features>.container>div[style*='display: flex']>.section-desc {
        text-align: center !important;
        margin-bottom: 24px !important;
    }

    .features>.container>div[style*='display: flex']>div {
        flex-direction: column !important;
        align-items: center !important;
    }

    .features>.container img {
        width: 110px !important;
        height: 110px !important;
        margin: 0 auto 8px auto !important;
    }

    .features>.container [style*='border: 1px solid'] {
        margin-bottom: 18px !important;
    }

    .features>.container [style*='font-size: 0.9rem'] {
        text-align: center !important;
    }
}