/* ==========================================
   Do it! khmer365 - Main Stylesheet
   Glassmorphism Hero + Professional Landing
   ========================================== */

/* --- CSS Variables --- */
:root {
    --primary: #333333; /* Dark Charcoal */
    --primary-light: #555555; /* Medium Grey */
    --primary-dark: #1A1A1A; /* Very Dark Grey */
    --secondary: #CBA469; /* Muted Gold */
    --secondary-light: #D4B78A; /* Lighter Muted Gold */
    --accent-green: #28A745; /* Green for success/checkmarks */
    --accent-purple: #6F42C5; /* Purple for specific highlights */
    --text-dark: #1A1A1A;
    --text-medium: #4A4A4A;
    --text-light: #7A7A7A;
    --bg-white: #FFFFFF;
    --bg-light: #F8F8F8; /* Lighter grey for subtle backgrounds */
    --bg-cream: #FDF9F5; /* Off-white for warmth */
    --bg-blue: #EBF3F8; /* Very light blue/grey */
    --border-light: #E0E0E0; /* Lighter border */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    /* Glassmorphism tokens */
    --glass-bg: rgba(255, 255, 255, 0.18);
    --glass-bg-strong: rgba(255, 255, 255, 0.30);
    --glass-border: rgba(255, 255, 255, 0.35);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.2); /* Adjusted for new primary */
    --glass-blur: blur(18px);
}

/* --- Reset & Base --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-dark);
    background: var(--bg-white);
    line-height: 1.7;
    overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }

/* --- Section Labels --- */
.section-label {
    display: inline-block; font-size: 0.85rem; font-weight: 600;
    color: var(--primary); text-transform: uppercase; letter-spacing: 2px;
    margin-bottom: 0.5rem; position: relative; padding-left: 40px;
}
.section-label::before {
    content: ''; position: absolute; left: 0; top: 50%;
    width: 28px; height: 2px; background: var(--secondary); transform: translateY(-50%);
}
.section-label.center { display: block; text-align: center; padding-left: 0; }
.section-label.center::before { display: none; }
.section-label.white { color: rgba(255,255,255,0.8); }

.section-title { font-size: 2.4rem; font-weight: 700; color: var(--text-dark); margin-bottom: 0.5rem; line-height: 1.3; }
.section-title.center { text-align: center; }
.section-desc { font-size: 1.05rem; color: var(--text-medium); margin-bottom: 2.5rem; }
.section-desc.center { text-align: center; }

/* ==========================================
   NAVIGATION - Glassmorphism
   ========================================== */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: var(--bg-white); /* Opaque background */
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light); /* Adjusted border color */
    transition: var(--transition);
}
/* ... existing navbar.scrolled rule ... */

.logo-khmer { font-size: 1.3rem; color: var(--primary); font-weight: 700; transition: var(--transition); }

.nav-link {
    font-size: 0.92rem; font-weight: 500; color: var(--text-medium); /* Always visible */
    position: relative; padding: 0.5rem 0; transition: var(--transition);
}
.nav-link:hover { color: #fff; }
.nav-link::after {
    content: ''; position: absolute; bottom: 0; left: 0; width: 0;
    height: 2px; background: var(--secondary); transition: var(--transition);
}
.nav-link:hover::after { width: 100%; }

.nav-buttons { display: flex; gap: 0.75rem; align-items: center; }
.btn-outline {
    padding: 0.5rem 1.2rem; border: 1.5px solid rgba(255,255,255,0.5);
    border-radius: var(--radius-sm); font-size: 0.88rem; font-weight: 500;
    color: rgba(255,255,255,0.9); transition: var(--transition);
}
.btn-outline:hover { background: rgba(255,255,255,0.2); color: #fff; }
.btn-primary-sm {
    padding: 0.5rem 1.2rem; background: rgba(255,255,255,0.2);
    border-radius: var(--radius-sm); font-size: 0.88rem; font-weight: 500;
    color: #fff; border: 1px solid rgba(255,255,255,0.3); transition: var(--transition);
}
.btn-primary-sm:hover { background: rgba(255,255,255,0.35); transform: translateY(-1px); }
.nav-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: #fff; cursor: pointer; }

/* ==========================================
   HERO - Full Background + Glassmorphism
   ========================================== */
.hero {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 100px 0 0;
    background: var(--bg-white);
}

.hero-wrapper {
    position: relative;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
    padding: 60px 2rem;
}

/* 도시 그림 배경 (contained) */
.hero-bg {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    z-index: 0;
}
.hero-bg img {
    width: 100%; height: 100%; object-fit: cover;
}
/* 배경 위 그라데이션 오버레이 */
.hero-bg::after {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(
        135deg,
        var(--primary-dark) 0%,
        var(--primary) 40%,
        var(--primary-light) 70%,
        rgba(198, 164, 105, 0.2) 100% /* Adjusted secondary with transparency */
    );
}

.hero-container {
    position: relative; z-index: 1;
    max-width: 900px; width: 100%; margin: 0 auto;
    display: flex; flex-direction: column; align-items: center;
    text-align: center; gap: 2rem;
}

/* 글래스모피즘 카드들 */
.glass {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur); -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
}
.glass-strong {
    background: var(--glass-bg-strong);
    backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(255,255,255,0.45);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 40px rgba(15, 45, 90, 0.30);
}

/* 메인 콘텐츠 글래스 카드 */
.hero-main-glass {
    padding: 3rem 3.5rem;
    max-width: 800px;
    width: 100%;
}

.hero-badge {
    display: inline-flex; align-items: center; gap: 0.5rem;
    background: rgba(232, 168, 56, 0.2);
    border: 1px solid rgba(232, 168, 56, 0.4);
    color: var(--secondary-light); padding: 0.5rem 1.2rem;
    border-radius: 50px; font-size: 0.82rem; font-weight: 600;
    margin-bottom: 1.5rem; backdrop-filter: blur(10px);
}
.hero-badge i { color: var(--secondary-light); }

.hero-title {
    font-size: 3.2rem; font-weight: 800; line-height: 1.15;
    color: #fff; margin-bottom: 1.2rem;
    text-shadow: 0 2px 20px rgba(0,0,0,0.2);
}
.highlight { color: var(--secondary-light); }

.hero-subtitle {
    font-size: 1.15rem; color: rgba(255,255,255,0.85);
    margin-bottom: 2rem; line-height: 1.8;
}

.btn-cta {
    display: inline-flex; align-items: center; gap: 0.75rem;
    background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-light) 100%);
    color: white; padding: 1rem 2.8rem; border-radius: var(--radius-xl);
    font-size: 1.1rem; font-weight: 600;
    box-shadow: 0 6px 30px rgba(203, 164, 105, 0.45); /* Adjusted rgba based on secondary */
    transition: var(--transition);
}
.btn-cta:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 10px 40px rgba(203, 164, 105, 0.55); /* Adjusted rgba based on secondary */
}

/* 하단 통계 글래스 */
.hero-stats-glass {
    padding: 1.5rem 2.5rem;
    display: flex; gap: 3rem; align-items: center;
}
.stat-item { display: flex; flex-direction: column; align-items: center; }
.stat-number { font-size: 1.8rem; font-weight: 700; color: #fff; }
.stat-label { font-size: 0.78rem; color: rgba(255,255,255,0.7); font-weight: 400; }
.stat-divider { width: 1px; height: 40px; background: rgba(255,255,255,0.25); }

/* 플로팅 글래스 카드 */
.hero-float-card {
    position: absolute; padding: 0.8rem 1.3rem;
    display: flex; align-items: center; gap: 0.6rem;
    font-size: 0.85rem; font-weight: 500; color: #fff;
    animation: float 4s ease-in-out infinite;
    z-index: 2;
}
.hero-float-card i { color: var(--secondary-light); font-size: 1.1rem; }
.card-1 { top: 22%; left: 5%; animation-delay: 0s; }
.card-2 { bottom: 18%; right: 5%; animation-delay: 2s; }
.card-3 { top: 35%; right: 3%; animation-delay: 1s; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

/* ==========================================
   PROBLEM Section
   ========================================== */
.problem { padding: 100px 0; background: var(--bg-cream); }
.problem-container {
    max-width: 1200px; margin: 0 auto; padding: 0 2rem;
    display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center;
}
.problem-image img {
    border-radius: var(--radius-lg); box-shadow: var(--shadow-md);
    max-height: 450px; object-fit: cover; width: 100%;
}
.problem-title { font-size: 2.2rem; font-weight: 700; line-height: 1.4; margin-bottom: 0.5rem; }
.highlight-yellow { color: var(--secondary); }
.problem-subtitle-en { font-size: 1.2rem; color: var(--text-light); font-style: italic; margin-bottom: 1.5rem; }
.problem-desc { font-size: 1.05rem; color: var(--text-medium); margin-bottom: 2rem; line-height: 1.8; }
.btn-problem {
    display: inline-flex; align-items: center; gap: 0.75rem;
    background: var(--secondary); color: white; padding: 0.85rem 2rem;
    border-radius: var(--radius-xl); font-size: 0.95rem; font-weight: 600;
    box-shadow: 0 4px 15px rgba(232,168,56,0.3);
}
.btn-problem:hover { transform: translateY(-2px); box-shadow: 0 6px 25px rgba(232,168,56,0.4); }

/* ==========================================
   EXPERTISE Section
   ========================================== */
.expertise { padding: 100px 0; background: var(--bg-white); }
.expertise-container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }
.expertise-cards { display: flex; align-items: center; justify-content: center; gap: 1.5rem; flex-wrap: wrap; }
.expertise-card {
    flex: 1; min-width: 280px; max-width: 340px; background: white;
    border-radius: var(--radius-lg); padding: 2rem;
    border: 1px solid var(--border-light); transition: var(--transition);
}
.expertise-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: var(--primary-light); }
.card-icon {
    width: 60px; height: 60px; border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center; font-size: 1.5rem; margin-bottom: 1.2rem;
}
.card-icon.blue { background: rgba(27,75,138,0.1); color: var(--primary); }
.card-icon.green { background: rgba(46,204,113,0.1); color: var(--accent-green); }
.card-icon.purple { background: rgba(142,68,173,0.1); color: var(--accent-purple); }
.expertise-card h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 0.5rem; }
.expertise-card > p { font-size: 0.9rem; color: var(--text-light); margin-bottom: 1.2rem; }
.card-features { list-style: none; }
.card-features li { font-size: 0.88rem; color: var(--text-medium); padding: 0.3rem 0; display: flex; align-items: center; gap: 0.5rem; }
.card-features li i { color: var(--accent-green); font-size: 0.75rem; }
.expertise-arrow { color: var(--border-light); font-size: 1.5rem; }

/* ==========================================
   STEPS Section
   ========================================== */
.steps { padding: 100px 0; background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-blue) 100%); }
.steps-container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }
.steps-timeline { display: flex; align-items: flex-start; justify-content: center; gap: 0; margin-top: 1rem; }
.step-card { flex: 1; max-width: 300px; text-align: center; padding: 2rem 1.5rem; position: relative; }
.step-number { font-size: 3rem; font-weight: 800; color: rgba(27,75,138,0.08); position: absolute; top: 0; right: 1rem; }
.step-icon {
    width: 80px; height: 80px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 2rem; margin: 0 auto 1.5rem;
}
.step-icon.idea { background: linear-gradient(135deg, #FFF3D6, #FFE4A0); color: #D4922A; box-shadow: 0 4px 15px rgba(232,168,56,0.25); }
.step-icon.registration { background: linear-gradient(135deg, #D6E9FF, #A0C8FF); color: var(--primary); box-shadow: 0 4px 15px rgba(27,75,138,0.25); }
.step-icon.operation { background: linear-gradient(135deg, #D6FFE0, #A0FFB8); color: #1E8449; box-shadow: 0 4px 15px rgba(46,204,113,0.25); }
.step-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 0.3rem; letter-spacing: 1px; }
.step-subtitle { font-size: 0.9rem; color: var(--primary); font-weight: 500; margin-bottom: 1rem; }
.step-desc { font-size: 0.9rem; color: var(--text-medium); line-height: 1.7; }
.step-connector { display: flex; align-items: center; padding-top: 4rem; color: var(--primary-light); font-size: 1.2rem; }
.connector-line { width: 40px; height: 2px; background: linear-gradient(90deg, var(--border-light), var(--primary-light)); margin-right: 0.5rem; }

/* ==========================================
   SOCIAL PROOF
   ========================================== */
.social-proof { padding: 100px 0; background: var(--bg-white); }
.social-container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }
.partners-row { display: flex; justify-content: center; gap: 3rem; margin-bottom: 4rem; flex-wrap: wrap; }
.partner-card {
    text-align: center; padding: 2rem; background: var(--bg-light);
    border-radius: var(--radius-lg); border: 1px solid var(--border-light);
    min-width: 220px; transition: var(--transition);
}
.partner-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.partner-logo { width: 100px; height: 100px; object-fit: contain; margin: 0 auto 1rem; border-radius: var(--radius-sm); }
.partner-card h3 { font-size: 1.3rem; font-weight: 700; color: var(--primary); margin-bottom: 0.5rem; }
.partner-card p { font-size: 0.88rem; color: var(--text-medium); line-height: 1.6; }
.partner-card small { color: var(--text-light); font-size: 0.8rem; }
.testimonials-row { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.testimonial-card {
    display: flex; gap: 1.5rem; padding: 2rem; background: white;
    border-radius: var(--radius-lg); border: 1px solid var(--border-light); transition: var(--transition);
}
.testimonial-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.testimonial-img { width: 80px; height: 80px; border-radius: 50%; object-fit: cover; border: 3px solid var(--bg-blue); flex-shrink: 0; }
.testimonial-stars { color: var(--secondary); font-size: 0.85rem; margin-bottom: 0.5rem; }
.testimonial-content p { font-size: 0.95rem; color: var(--text-medium); line-height: 1.7; margin-bottom: 0.75rem; font-style: italic; }
.testimonial-name { display: block; font-weight: 600; font-size: 0.9rem; color: var(--text-dark); }
.testimonial-role { display: block; font-size: 0.8rem; color: var(--text-light); }

/* ==========================================
   FINAL CTA
   ========================================== */
.final-cta {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
    position: relative; overflow: hidden;
}
.final-cta::before {
    content: ''; position: absolute; top: -50%; left: -20%;
    width: 600px; height: 600px; border-radius: 50%;
    background: radial-gradient(circle, rgba(232,168,56,0.1) 0%, transparent 70%);
}
.cta-container { max-width: 800px; margin: 0 auto; padding: 0 2rem; text-align: center; position: relative; z-index: 1; }
.cta-title { font-size: 2.5rem; font-weight: 700; color: white; margin-bottom: 1rem; line-height: 1.4; }
.cta-highlight { color: var(--secondary-light); }
.cta-desc { font-size: 1.1rem; color: rgba(255,255,255,0.8); margin-bottom: 2.5rem; line-height: 1.8; }
.cta-buttons { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; }
.btn-cta-main {
    display: inline-flex; align-items: center; gap: 0.75rem;
    background: var(--secondary); color: white; padding: 1rem 2.5rem;
    border-radius: var(--radius-xl); font-size: 1.05rem; font-weight: 600;
    box-shadow: 0 4px 20px rgba(232,168,56,0.35);
}
.btn-cta-main:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(232,168,56,0.45); }
.btn-cta-secondary {
    display: inline-flex; align-items: center; gap: 0.75rem;
    background: rgba(255,255,255,0.15); color: white; padding: 1rem 2.5rem;
    border-radius: var(--radius-xl); font-size: 1.05rem; font-weight: 600;
    border: 1.5px solid rgba(255,255,255,0.3);
}
.btn-cta-secondary:hover { background: rgba(255,255,255,0.25); transform: translateY(-3px); }

/* ==========================================
   FOOTER
   ========================================== */
.footer { background: var(--text-dark); color: rgba(255,255,255,0.7); padding: 60px 0 0; }
.footer-container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 3rem; padding-bottom: 3rem; }
.footer-logo { margin-bottom: 1rem; }
.footer-logo .logo-do { font-size: 1.1rem; }
.footer-logo .logo-khmer { font-size: 1.3rem; color: white; }
.footer-desc { font-size: 0.9rem; line-height: 1.7; margin-bottom: 1.5rem; }
.footer-social { display: flex; gap: 1rem; }
.footer-social a {
    width: 38px; height: 38px; border-radius: 50%; background: rgba(255,255,255,0.1);
    display: flex; align-items: center; justify-content: center;
    font-size: 0.9rem; color: rgba(255,255,255,0.7); transition: var(--transition);
}
.footer-social a:hover { background: var(--primary-light); color: white; }
.footer-links h4, .footer-contact h4 { color: white; font-size: 1rem; font-weight: 600; margin-bottom: 1.2rem; }
.footer-links ul, .footer-contact ul { list-style: none; }
.footer-links li, .footer-contact li { padding: 0.3rem 0; font-size: 0.9rem; }
.footer-links a:hover { color: var(--secondary); }
.footer-contact li { display: flex; align-items: center; gap: 0.5rem; }
.footer-contact li i { color: var(--secondary); width: 18px; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1); padding: 1.5rem 0;
    display: flex; justify-content: space-between; font-size: 0.82rem; color: rgba(255,255,255,0.4);
}

/* ==========================================
   RESPONSIVE
   ========================================== */
@media (max-width: 1024px) {
    .hero-title { font-size: 2.5rem; }
    .hero-main-glass { padding: 2.5rem 2rem; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

    @media (max-width: 768px) {
    .nav-menu {
        display: none; position: absolute; top: 70px; left: 0; right: 0;
        background: var(--primary-dark); /* Using primary-dark for mobile menu background */
        backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
        flex-direction: column; padding: 1rem 2rem; gap: 0.5rem;
    }
    .nav-menu.active { display: flex; }
    .navbar.scrolled .nav-menu { background: var(--bg-white); } /* White background when scrolled */
    .navbar.scrolled .nav-menu .nav-link { color: var(--text-medium); }
    .nav-buttons { display: none; }
    .nav-toggle { display: block; }
    .hero { padding: 80px 0 0; }
    .hero-wrapper { min-height: auto; padding: 40px 1rem; border-radius: 0; }
    .hero-title { font-size: 2rem; }
    .hero-main-glass { padding: 2rem 1.5rem; }
    .hero-stats-glass { flex-direction: column; gap: 1.2rem; padding: 1.2rem; }
    .stat-divider { width: 60px; height: 1px; }
    .hero-float-card { display: none; }

    .problem-container { grid-template-columns: 1fr; gap: 2rem; }
    .expertise-cards { flex-direction: column; align-items: center; }
    .expertise-arrow { transform: rotate(90deg); }
    .steps-timeline { flex-direction: column; align-items: center; }
    .step-connector { transform: rotate(90deg); padding-top: 0; margin: 0.5rem 0; }
    .testimonials-row { grid-template-columns: 1fr; }
    .testimonial-card { flex-direction: column; align-items: center; text-align: center; }
    .cta-title { font-size: 1.8rem; }
    .cta-buttons { flex-direction: column; align-items: center; }
    .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
    .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
    .section-title { font-size: 1.8rem; }
    .partners-row { flex-direction: column; align-items: center; }
}

/* --- Scroll Animations --- */
.fade-up { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }