:root {
    --samsung-black: #000000;
    --samsung-white: #ffffff;
    --samsung-gray-bg: #f4f4f7;
    --samsung-gray-text: #555555;
    --samsung-blue: #2189ff;
    --samsung-font: 'Inter', 'SamsungOne', Helvetica, Arial, sans-serif;
    --transition-samsung: all 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: var(--samsung-font);
    background-color: var(--samsung-white);
    color: var(--samsung-black);
    line-height: 1.4;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Navigation - Samsung Style (Thin, Modern) */
header {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    z-index: 2000;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1440px;
    margin: 0 auto;
    padding: 12px 40px;
}

.logo a {
    font-weight: 900;
    font-size: 1.4rem;
    color: var(--samsung-black);
    letter-spacing: -1px;
    text-transform: uppercase;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 40px;
    list-style: none;
}

.nav-links a {
    font-weight: 700;
    color: var(--samsung-black);
    font-size: 0.85rem;
    text-decoration: none;
    transition: color 0.3s;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--samsung-blue);
}

/* Hero - Full Bleed Cinematic */
.hero {
    height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: var(--samsung-black);
    color: var(--samsung-white);
    padding: 0 20px;
    position: relative;
    overflow: hidden;
}

.hero-content { max-width: 1000px; z-index: 2; }

.hero h1 {
    font-size: 4.5rem;
    font-weight: 800;
    letter-spacing: -2px;
    margin-bottom: 20px;
    line-height: 1;
}

.hero p {
    font-size: 1.4rem;
    color: #cccccc;
    margin-bottom: 40px;
    font-weight: 400;
}

/* Buttons - Samsung Pill Style */
.btn {
    padding: 12px 32px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 0.9rem;
    transition: var(--transition-samsung);
    cursor: pointer;
    display: inline-block;
    text-decoration: none;
}

.btn-primary { background: var(--samsung-white); color: var(--samsung-black); border: none; }
.btn-outline { border: 1px solid var(--samsung-white); color: var(--samsung-white); background: transparent; }

.btn:hover { transform: scale(1.05); }

/* Section Headlines */
.section-title {
    text-align: center;
    font-size: 3rem;
    font-weight: 800;
    margin: 100px 0 60px;
    letter-spacing: -1px;
}

/* Samsung-style Product Grid (Borderless) */
.product-section {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 40px;
}

.samsung-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.samsung-block {
    background: var(--samsung-gray-bg);
    border-radius: 30px;
    padding: 80px 50px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition-samsung);
}

.samsung-block:hover { transform: translateY(-5px); }

.samsung-block.dark {
    background: var(--samsung-black);
    color: var(--samsung-white);
}

.samsung-block h3 { font-size: 2.2rem; font-weight: 800; margin-bottom: 15px; }
.samsung-block p { font-size: 1.1rem; color: var(--samsung-gray-text); margin-bottom: 30px; }
.samsung-block.dark p { color: #aaaaaa; }

.link-arrow {
    font-weight: 700;
    color: var(--samsung-black);
    text-decoration: none;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.dark .link-arrow { color: var(--samsung-white); }

/* Footer - Clean Samsung Look */
footer {
    background: var(--samsung-white);
    color: var(--samsung-black);
    padding: 100px 40px 60px;
    border-top: 1px solid #eeeeee;
}

.footer-content {
    max-width: 1440px;
    margin: 0 auto;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    margin-bottom: 60px;
}

.footer-links { display: flex; gap: 60px; }
.footer-col h5 { font-size: 0.9rem; margin-bottom: 25px; font-weight: 800; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 12px; }
.footer-col a { color: var(--samsung-gray-text); text-decoration: none; font-size: 0.85rem; font-weight: 500; }

.footer-bottom {
    border-top: 1px solid #eeeeee;
    padding-top: 40px;
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: #999999;
}

/* Animations */
.reveal { opacity: 0; transform: translateY(50px); transition: var(--transition-samsung); }
.reveal.active { opacity: 1; transform: translateY(0); }

@media (max-width: 768px) {
    .hero h1 { font-size: 2.8rem; }
    .samsung-grid { grid-template-columns: 1fr; }
    .nav-links { display: none; }
}