/* --- CSS RESET & ROOT VARIABLES --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --iktai-red: #BC002D;
    --sumi-ink: #2F2F2F;
    --rice-paper-white: #F8F6F2;
    --bamboo-beige: #D4CBA9;
    --font-primary: 'Poppins', sans-serif;
    --transition-fast: 0.3s cubic-bezier(0.25, 1, 0.5, 1);
    --transition-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-primary);
    background-color: var(--rice-paper-white);
    color: var(--sumi-ink);
    font-weight: 300;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    opacity: 0;
    transition: opacity 0.5s ease;
}

body.loaded { opacity: 1; }

/* --- PRELOADER --- */
.preloader {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-color: var(--rice-paper-white);
    display: grid;
    place-items: center;
    z-index: 2000;
    transition: opacity 0.5s ease 0.2s, visibility 0.5s ease 0.2s;
}
.preloader-logo {
    width: 60px;
    height: 60px;
    background-image: url('logo.svg');
    background-size: contain;
    animation: pulse-load 1.8s infinite ease-in-out;
}
@keyframes pulse-load {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(0.9); opacity: 0.7; }
}
.preloader.hidden { opacity: 0; visibility: hidden; }

/* --- GLOBAL TYPOGRAPHY & BUTTONS --- */
h1, h2 {
    font-family: var(--font-primary);
    line-height: 1.2;
    font-weight: 600;
}
h1 { font-size: clamp(3rem, 7vw, 5rem); }
h2 { font-size: clamp(2.2rem, 5vw, 3.2rem); }
.subtitle {
    font-family: var(--font-primary);
    font-weight: 600;
    color: var(--iktai-red);
    margin-bottom: 1rem;
    display: block;
    letter-spacing: 1px;
    font-size: 1rem;
}
.cta-button, .cta-button-large {
    display: inline-block;
    background: var(--iktai-red);
    color: #fff;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-fast);
    border: 2px solid var(--iktai-red);
}
.cta-button-large { padding: 1rem 2.5rem; }
.cta-button:hover, .cta-button-large:hover {
    background-color: transparent;
    color: var(--iktai-red);
    transform: scale(1.05);
}

/* --- HEADER --- */
#header {
    position: fixed;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: var(--transition-fast);
}
#header.scrolled {
    background: rgba(248, 246, 242, 0.85);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
nav.container { display: flex; justify-content: space-between; align-items: center; }
.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}
.brand-logo img { height: 36px; width: 36px; }
.brand-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--sumi-ink);
}

/* --- HERO SECTION --- */
#hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    text-align: center;
    padding: 8rem 0 4rem 0;
}
.hero-content { max-width: 800px; margin: 0 auto; }
.hero-subtext {
    font-size: 1.2rem;
    line-height: 1.8;
    margin: 1.5rem 0 0 0;
    color: #5f5f5f;
}

/* --- ANIMATIONS --- */
[data-animate] {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
    transition-delay: var(--delay, 0s);
}
[data-animate].is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- LAYOUT & SECTIONS --- */
.container { max-width: 1000px; margin: 0 auto; padding: 0 1.5rem; }
.content-section { padding: 5rem 0; }
.content-section-dark {
    padding: 7rem 0;
    background-color: var(--sumi-ink);
    color: var(--rice-paper-white);
    text-align: center;
}
.content-section-dark h2, .content-section-dark p { max-width: 700px; margin-left: auto; margin-right: auto; }
.content-section-dark .subtitle-dark { color: var(--iktai-red); }

/* --- PILLARS SECTION --- */
.pillar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 5rem;
    padding: 5rem 0;
}
.pillar:nth-child(even) .pillar-image { grid-column: 2; }
.pillar:nth-child(even) .pillar-text { grid-column: 1; grid-row: 1; }
.pillar-image img {
    width: 100%;
    border-radius: 4px;
}
.pillar-text p { max-width: 400px; }

/* --- CTA SECTION --- */
.cta-section {
    padding: 7rem 0;
    text-align: center;
    background-color: var(--bamboo-beige);
}
.cta-section .container { max-width: 700px; }
.cta-section h2 { margin-bottom: 1rem; }
.cta-section p { font-size: 1.15rem; margin-bottom: 2rem; }

/* --- FOOTER --- */
#footer {
    background: var(--rice-paper-white);
    text-align: center;
    padding: 4rem 0;
    border-top: 1px solid #e0e0e0;
}
#footer .brand-logo { justify-content: center; margin-bottom: 1rem; }
.copyright { font-size: 0.9rem; color: #888; }

/* --- RESPONSIVE DESIGN --- */
@media (max-width: 768px) {
    .pillar { grid-template-columns: 1fr; gap: 2rem; }
    .pillar:nth-child(even) .pillar-image { grid-column: 1; }
    .pillar-text { text-align: center; }
    .pillar-text p { margin-left: auto; margin-right: auto; }
}