/* ==========================================================================
   Denktank KEINA — Custom Theme
   Professional think tank design: navy, gold, editorial typography
   ========================================================================== */

:root {
    --navy: #1B2A4A;
    --navy-deep: #0F1A2E;
    --navy-light: #2A3F6A;
    --gold: #C9A84C;
    --gold-light: #E0C472;
    --cream: #FAF8F5;
    --white: #FFFFFF;
    --text-dark: #1A1A2E;
    --text-body: #3A3A4A;
    --text-muted: #6B7280;
    --border-light: #E5E7EB;
}

/* ---------- Base ---------- */

* {
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-body);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', Georgia, serif;
    color: var(--text-dark);
    font-weight: 700;
}

p {
    margin-bottom: 1rem;
}

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

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

/* ---------- Navigation ---------- */

#mainNav {
    background-color: rgba(15, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    transition: padding 0.3s ease, background-color 0.3s ease;
    border-bottom: 1px solid rgba(201, 168, 76, 0.15);
}

#mainNav.navbar-shrink {
    padding: 0.5rem 0;
    background-color: rgba(15, 26, 46, 0.98);
}

.navbar-brand {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.brand-accent {
    font-family: 'Playfair Display', serif;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--white);
    letter-spacing: 3px;
}

.brand-sub {
    font-family: 'Inter', sans-serif;
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--gold);
    text-transform: uppercase;
    letter-spacing: 2px;
}

#mainNav .navbar-toggler {
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--white);
    padding: 0.4rem 0.75rem;
    font-size: 0.9rem;
}

#mainNav .nav-link {
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.75);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    padding: 0.5rem 1.25rem;
    transition: color 0.2s ease;
}

#mainNav .nav-link:hover,
#mainNav .nav-link.active {
    color: var(--gold);
}

/* ---------- Hero Section ---------- */

.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--navy-deep) 0%, var(--navy) 50%, var(--navy-light) 100%);
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: url('../assets/img/bg-masthead.jpg') center center / cover no-repeat;
    opacity: 0.08;
}

.hero-tagline {
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 4px;
    color: var(--gold);
    margin-bottom: 1rem;
}

.hero-title {
    font-family: 'Playfair Display', serif;
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 800;
    color: var(--white);
    letter-spacing: 8px;
    margin-bottom: 1.5rem;
}

.hero-divider {
    width: 60px;
    height: 3px;
    background-color: var(--gold);
    margin: 0 auto 1.5rem;
}

.hero-subtitle {
    font-family: 'Inter', sans-serif;
    font-size: 1.15rem;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.7);
    max-width: 500px;
    margin: 0 auto;
    line-height: 1.8;
}

.btn-hero {
    font-family: 'Inter', sans-serif;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--gold);
    border: 1px solid var(--gold);
    padding: 0.75rem 2rem;
    border-radius: 0;
    transition: all 0.3s ease;
}

.btn-hero:hover {
    background-color: var(--gold);
    color: var(--navy-deep);
}

/* ---------- Mission Strip ---------- */

.mission-strip {
    background-color: var(--gold);
    padding: 1.25rem 0;
}

.mission-text {
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--navy-deep);
    margin: 0;
}

/* ---------- Sections ---------- */

.section-light {
    padding: 6rem 0;
    background-color: var(--white);
}

.section-dark {
    padding: 6rem 0;
    background-color: var(--navy);
}

.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.title-divider {
    width: 50px;
    height: 3px;
    background-color: var(--gold);
    margin: 0 auto 1.5rem;
}

.title-divider-light {
    background-color: var(--gold-light);
}

.section-intro {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.65);
    font-weight: 300;
    margin-top: 0.5rem;
}

/* ---------- About Card ---------- */

.about-card {
    background-color: var(--cream);
    border-left: 4px solid var(--gold);
    padding: 2.5rem 3rem;
    border-radius: 0 4px 4px 0;
}

.about-card p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-body);
}

.about-card p:last-child {
    margin-bottom: 0;
}

.about-memorial {
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 1rem;
}

.about-memorial p {
    font-style: italic;
    color: var(--text-muted);
    font-size: 1rem;
}

/* ---------- Topic Cards ---------- */

.topic-card {
    background-color: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    padding: 2rem 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
    height: 100%;
}

.topic-card:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--gold);
    transform: translateY(-3px);
}

.topic-card i {
    font-size: 1.8rem;
    color: var(--gold);
    margin-bottom: 1rem;
    display: block;
}

.topic-card h4 {
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 0;
}

/* ---------- Chairman ---------- */

.chairman-card {
    background-color: var(--cream);
    border-radius: 4px;
    padding: 3rem;
    border-top: 4px solid var(--gold);
}

.chairman-photo {
    width: 180px;
    height: 180px;
    object-fit: cover;
    border-radius: 50%;
    border: 3px solid var(--border-light);
}

.chairman-name {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.25rem;
}

.chairman-role {
    font-family: 'Inter', sans-serif;
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--gold);
    margin: 0;
}

.chairman-card p {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-body);
}

.chairman-card p:last-child {
    margin-bottom: 0;
}

/* ---------- Footer ---------- */

.site-footer {
    background-color: var(--navy-deep);
    padding: 2rem 0;
    border-top: 1px solid rgba(201, 168, 76, 0.2);
}

.footer-brand {
    font-family: 'Playfair Display', serif;
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--white);
    letter-spacing: 2px;
}

.footer-brand-sub {
    font-family: 'Inter', sans-serif;
    font-size: 0.65rem;
    font-weight: 400;
    color: var(--gold);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-left: 0.5rem;
}

.footer-tagline {
    font-family: 'Inter', sans-serif;
    font-size: 0.8rem;
    font-style: italic;
    color: rgba(255, 255, 255, 0.4);
    margin: 0;
}

.footer-copy {
    font-family: 'Inter', sans-serif;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.4);
    margin: 0;
}

/* ---------- Responsive ---------- */

@media (max-width: 768px) {
    .hero-title {
        letter-spacing: 4px;
    }

    .about-card,
    .chairman-card {
        padding: 2rem 1.5rem;
    }

    .section-light,
    .section-dark {
        padding: 4rem 0;
    }

    .mission-text {
        font-size: 0.75rem;
        letter-spacing: 2px;
    }

    .chairman-photo {
        width: 140px;
        height: 140px;
    }
}

/* ---------- Smooth scroll ---------- */

html {
    scroll-behavior: smooth;
}

/* ---------- Selection ---------- */

::selection {
    background-color: var(--gold);
    color: var(--navy-deep);
}