/* ===== ENCUESTADORA VIRAL - CSS ===== */
/* Variables */
:root {
    --primary: #FFD700;
    --primary-dark: #E6C200;
    --primary-light: #FFE44D;
    --bg-dark: #0a0a0a;
    --bg-dark-2: #111111;
    --bg-dark-3: #1a1a1a;
    --bg-card: #141414;
    --text-white: #ffffff;
    --text-light: #cccccc;
    --text-muted: #888888;
    --border: #2a2a2a;
    --success: #00c853;
    --error: #ff1744;
    --whatsapp: #25D366;
    --glass: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --shadow: 0 8px 32px rgba(0,0,0,0.4);
    --shadow-sm: 0 4px 12px rgba(0,0,0,0.3);
    --radius: 16px;
    --radius-sm: 10px;
    --radius-xs: 6px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { font-family: var(--font-body); background: var(--bg-dark); color: var(--text-light); line-height: 1.7; overflow-x: hidden; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-light); }
img { max-width: 100%; height: auto; }
ul { list-style: none; }
h1, h2, h3, h4, h5 { font-family: var(--font-heading); color: var(--text-white); line-height: 1.2; }

/* Container */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.text-center { text-align: center; }
.mt-4 { margin-top: 2rem; }
.text-accent { color: var(--primary); }

/* ===== PRELOADER ===== */
#preloader { position: fixed; inset: 0; background: var(--bg-dark); z-index: 10000; display: flex; align-items: center; justify-content: center; transition: opacity 0.5s; }
#preloader.hidden { opacity: 0; pointer-events: none; }
.loader { text-align: center; }
.loader-logo { width: 120px; animation: pulse 1.5s infinite; }
.loader-bar { width: 200px; height: 3px; background: var(--border); border-radius: 4px; margin-top: 20px; overflow: hidden; }
.loader-progress { height: 100%; background: var(--primary); border-radius: 4px; animation: loading 1.5s ease-in-out; }
@keyframes loading { from { width: 0; } to { width: 100%; } }
@keyframes pulse { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.05); } }

/* ===== HEADER ===== */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(10,10,10,0.9); backdrop-filter: blur(20px); border-bottom: 1px solid var(--glass-border); transition: var(--transition); }
.header.scrolled { background: rgba(10,10,10,0.98); box-shadow: var(--shadow-sm); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 75px; }
.logo-img { height: 50px; transition: var(--transition); }
.logo:hover .logo-img { transform: scale(1.05); }
.nav-list { display: flex; gap: 8px; align-items: center; }
.nav-link { padding: 8px 16px; border-radius: var(--radius-xs); font-weight: 500; font-size: 0.95rem; color: var(--text-light); transition: var(--transition); }
.nav-link:hover, .nav-link.active { color: var(--primary); background: rgba(255,215,0,0.1); }
.nav-link-cta { background: var(--primary) !important; color: var(--bg-dark) !important; font-weight: 600; }
.nav-link-cta:hover { background: var(--primary-light) !important; transform: translateY(-2px); }

/* Hamburger */
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 10px; }
.hamburger, .hamburger::before, .hamburger::after { display: block; width: 24px; height: 2px; background: var(--text-white); transition: var(--transition); position: relative; }
.hamburger::before, .hamburger::after { content: ''; position: absolute; left: 0; }
.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }
.nav-toggle.active .hamburger { background: transparent; }
.nav-toggle.active .hamburger::before { transform: rotate(45deg); top: 0; }
.nav-toggle.active .hamburger::after { transform: rotate(-45deg); top: 0; }

/* ===== BUTTONS ===== */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 24px; border-radius: var(--radius-sm); font-weight: 600; font-size: 0.95rem; border: none; cursor: pointer; transition: var(--transition); font-family: var(--font-body); text-align: center; justify-content: center; }
.btn-primary { background: var(--primary); color: var(--bg-dark); }
.btn-primary:hover { background: var(--primary-light); color: var(--bg-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255,215,0,0.3); }
.btn-outline { background: transparent; border: 2px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: var(--bg-dark); transform: translateY(-2px); }
.btn-whatsapp { background: var(--whatsapp); color: white; }
.btn-whatsapp:hover { background: #20BA5C; color: white; transform: translateY(-2px); }
.btn-lg { padding: 14px 32px; font-size: 1.05rem; }
.btn-sm { padding: 6px 14px; font-size: 0.85rem; }
.btn-block { width: 100%; }

/* ===== HERO ===== */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; background: var(--bg-dark); overflow: hidden; padding-top: 75px; }
.hero-particles { position: absolute; inset: 0; }
.hero-overlay { position: absolute; inset: 0; background: radial-gradient(ellipse at 30% 50%, rgba(255,215,0,0.08) 0%, transparent 70%); }
.hero-content { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; position: relative; z-index: 2; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; padding: 8px 16px; background: rgba(255,215,0,0.1); border: 1px solid rgba(255,215,0,0.3); border-radius: 50px; font-size: 0.85rem; color: var(--primary); margin-bottom: 24px; }
.hero-title { font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 800; margin-bottom: 20px; color: var(--text-white); }
.hero-title-accent { color: var(--primary); display: inline; }
.hero-subtitle { font-size: 1.15rem; color: var(--text-muted); margin-bottom: 32px; max-width: 540px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-image { display: flex; justify-content: center; align-items: center; }
.hero-logo-img { width: 100%; max-width: 420px; filter: drop-shadow(0 0 60px rgba(255,215,0,0.2)); animation: float 6s ease-in-out infinite; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-20px); } }
.hero-scroll { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); z-index: 2; }
.scroll-indicator { display: flex; flex-direction: column; align-items: center; gap: 8px; color: var(--text-muted); font-size: 0.85rem; animation: bounce 2s infinite; }
@keyframes bounce { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(8px); } }

/* ===== CREDENTIALS ===== */
.credentials { background: var(--bg-dark-2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 24px 0; }
.credentials-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.credential-item { display: flex; align-items: center; gap: 12px; padding: 12px; border-radius: var(--radius-sm); }
.credential-icon { width: 44px; height: 44px; background: rgba(255,215,0,0.1); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 1.1rem; flex-shrink: 0; }
.credential-text strong { display: block; font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.credential-text span { color: var(--text-white); font-weight: 600; font-size: 0.95rem; }

/* ===== SECTIONS ===== */
.section { padding: 80px 0; }
.section-dark { background: var(--bg-dark-2); }
.section-header { text-align: center; margin-bottom: 50px; }
.section-tag { display: inline-flex; align-items: center; gap: 6px; background: rgba(255,215,0,0.1); color: var(--primary); padding: 6px 16px; border-radius: 50px; font-size: 0.85rem; font-weight: 600; margin-bottom: 16px; }
.section-title { font-size: clamp(1.8rem, 3vw, 2.5rem); font-weight: 800; margin-bottom: 12px; }
.section-subtitle { color: var(--text-muted); font-size: 1.05rem; max-width: 600px; margin: 0 auto; }

/* ===== SERVICE CARDS ===== */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.service-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 24px; transition: var(--transition); position: relative; overflow: hidden; }
.service-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--primary), var(--primary-light)); transform: scaleX(0); transition: var(--transition); transform-origin: left; }
.service-card:hover { transform: translateY(-8px); border-color: rgba(255,215,0,0.3); box-shadow: 0 12px 40px rgba(255,215,0,0.1); }
.service-card:hover::before { transform: scaleX(1); }
.service-icon-wrap { margin-bottom: 20px; }
.service-icon { width: 56px; height: 56px; background: rgba(255,215,0,0.1); border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; color: var(--primary); }
.service-card h3 { font-size: 1.2rem; margin-bottom: 12px; }
.service-card p { color: var(--text-muted); font-size: 0.95rem; margin-bottom: 16px; }
.service-link { font-weight: 600; font-size: 0.9rem; display: inline-flex; align-items: center; gap: 6px; }
.service-link i { transition: var(--transition); }
.service-link:hover i { transform: translateX(4px); }

/* ===== STATS ===== */
.stats-section { position: relative; overflow: hidden; }
.stats-bg { position: absolute; inset: 0; background: linear-gradient(135deg, var(--bg-dark-2), var(--bg-dark-3)); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; z-index: 1; }
.stat-item { text-align: center; padding: 32px 16px; background: var(--glass); border: 1px solid var(--glass-border); border-radius: var(--radius); backdrop-filter: blur(10px); transition: var(--transition); position: relative; }
.stat-item:hover { transform: translateY(-4px); border-color: rgba(255,215,0,0.3); }
.stat-number { font-family: var(--font-heading); font-size: 3rem; font-weight: 800; color: var(--primary); display: block; }
.stat-number::after { content: '+'; }
.stat-label { color: var(--text-muted); font-size: 0.9rem; margin-top: 4px; }
.stat-icon { position: absolute; top: 12px; right: 12px; color: rgba(255,215,0,0.15); font-size: 1.5rem; }

/* ===== PUBLICATIONS ===== */
.publications-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 24px; }
.publication-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; transition: var(--transition); }
.publication-card:hover { border-color: rgba(255,215,0,0.3); transform: translateY(-4px); }
.publication-category { display: inline-block; background: rgba(255,215,0,0.15); color: var(--primary); padding: 4px 12px; border-radius: 50px; font-size: 0.8rem; font-weight: 600; margin-bottom: 12px; }
.publication-title { font-size: 1.15rem; margin-bottom: 10px; }
.publication-desc { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 16px; }
.publication-meta { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; color: var(--text-muted); font-size: 0.85rem; }

/* Publications Full */
.publications-grid-full { display: grid; gap: 24px; }
.publication-card-full { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; transition: var(--transition); }
.publication-card-full:hover { border-color: rgba(255,215,0,0.3); }
.pub-card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; flex-wrap: wrap; gap: 8px; }
.pub-category-badge { background: rgba(255,215,0,0.15); color: var(--primary); padding: 4px 14px; border-radius: 50px; font-size: 0.8rem; font-weight: 600; }
.pub-date { color: var(--text-muted); font-size: 0.85rem; }
.pub-title { font-size: 1.3rem; margin-bottom: 10px; }
.pub-desc { color: var(--text-muted); margin-bottom: 16px; }
.pub-ficha { background: rgba(255,255,255,0.03); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 16px; margin-bottom: 16px; }
.pub-ficha h4 { font-size: 0.9rem; color: var(--primary); margin-bottom: 10px; }
.ficha-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 8px; }
.ficha-item { font-size: 0.9rem; color: var(--text-muted); }
.ficha-item strong { color: var(--text-light); }
.pub-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.pub-layout-split { display: grid; gap: 30px; }
.pub-layout-split:not(.no-pdf) { grid-template-columns: 1fr; }
@media (min-width: 992px) {
    .pub-layout-split:not(.no-pdf) { grid-template-columns: 1fr 1fr; align-items: stretch; }
}
.pub-details-col { display: flex; flex-direction: column; justify-content: center; }
.pub-preview-col { background: var(--bg-dark); border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; height: 100%; min-height: 450px; display: flex; }
.pdf-preview-container { width: 100%; height: 100%; display: block; flex: 1; min-height: 450px; }
.pdf-preview-container iframe { width: 100%; height: 100%; border: none; min-height: 450px; }
/* Filter Bar */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 32px; justify-content: center; }
.filter-btn { padding: 8px 20px; border-radius: 50px; font-size: 0.9rem; font-weight: 500; color: var(--text-muted); background: var(--bg-card); border: 1px solid var(--border); transition: var(--transition); }
.filter-btn:hover, .filter-btn.active { background: var(--primary); color: var(--bg-dark); border-color: var(--primary); }

/* Empty State */
.empty-state { text-align: center; padding: 60px 20px; }
.empty-icon { font-size: 4rem; color: var(--border); margin-bottom: 20px; }
.empty-state h3 { margin-bottom: 10px; font-size: 1.5rem; }
.empty-state p { color: var(--text-muted); margin-bottom: 24px; }

/* ===== CTA ===== */
.cta-section { background: linear-gradient(135deg, var(--bg-dark-3), var(--bg-dark)); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.cta-content { text-align: center; max-width: 700px; margin: 0 auto; }
.cta-title { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 16px; }
.cta-subtitle { color: var(--text-muted); margin-bottom: 28px; font-size: 1.05rem; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== PAGE BANNER ===== */
.page-banner { padding: 140px 0 60px; background: linear-gradient(135deg, var(--bg-dark), var(--bg-dark-2)); border-bottom: 1px solid var(--border); text-align: center; }
.page-banner-title { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; margin-bottom: 12px; }
.page-banner-subtitle { color: var(--text-muted); font-size: 1.1rem; margin-bottom: 16px; }
.breadcrumb { font-size: 0.9rem; color: var(--text-muted); display: flex; align-items: center; gap: 8px; justify-content: center; }
.breadcrumb a { color: var(--primary); }
.breadcrumb i { font-size: 0.7rem; }

/* ===== ABOUT ===== */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-content p { margin-bottom: 16px; }
.about-features { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 24px; }
.about-feature { display: flex; align-items: center; gap: 8px; color: var(--text-white); font-weight: 500; }
.about-feature i { color: var(--primary); }
.about-card-resolution { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; position: relative; }
.resolution-img { border-radius: var(--radius-sm); width: 100%; }
.resolution-badge { position: absolute; bottom: 16px; right: 16px; background: var(--success); color: white; padding: 6px 14px; border-radius: 50px; font-size: 0.8rem; font-weight: 600; }

/* MVV */
.mvv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.mvv-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; text-align: center; transition: var(--transition); }
.mvv-card:hover { transform: translateY(-4px); border-color: rgba(255,215,0,0.3); }
.mvv-icon { width: 64px; height: 64px; background: rgba(255,215,0,0.1); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; color: var(--primary); margin: 0 auto 16px; }
.mvv-card h3 { margin-bottom: 12px; font-size: 1.3rem; }
.values-list { text-align: left; }
.values-list li { padding: 6px 0; display: flex; align-items: center; gap: 8px; color: var(--text-light); }
.values-list li i { color: var(--primary); font-size: 0.7rem; }

/* Team */
.team-featured { display: flex; gap: 40px; align-items: center; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 40px; max-width: 800px; margin: 0 auto; }
.avatar-placeholder { width: 120px; height: 120px; background: rgba(255,215,0,0.1); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 3rem; color: var(--primary); flex-shrink: 0; }
.team-name { font-size: 1.5rem; margin-bottom: 4px; }
.team-role { color: var(--primary); font-weight: 600; display: block; margin-bottom: 12px; }
.team-credentials { display: flex; gap: 16px; margin-bottom: 12px; flex-wrap: wrap; }
.team-credential { display: flex; align-items: center; gap: 6px; font-size: 0.85rem; color: var(--text-muted); }
.team-credential i { color: var(--primary); }
.team-bio { color: var(--text-muted); font-size: 0.95rem; }

/* Legal */
.legal-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; max-width: 900px; margin: 0 auto; }
.legal-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.legal-item label { display: block; font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 4px; }
.legal-item span { color: var(--text-white); font-weight: 500; }

/* ===== SERVICE DETAIL ===== */
.service-detail { display: grid; grid-template-columns: 1.3fr 0.7fr; gap: 40px; align-items: start; }
.service-detail.reverse { grid-template-columns: 0.7fr 1.3fr; }
.service-detail.reverse .service-detail-content { order: 2; }
.service-detail.reverse .service-detail-visual { order: 1; }
.service-detail-icon { font-size: 2rem; color: var(--primary); margin-bottom: 16px; }
.service-detail-content h2 { font-size: 1.8rem; margin-bottom: 16px; }
.service-detail-content > p { color: var(--text-muted); margin-bottom: 24px; }
.service-features { display: grid; gap: 16px; }
.service-feature-item { display: flex; gap: 16px; padding: 16px; background: var(--glass); border: 1px solid var(--glass-border); border-radius: var(--radius-sm); transition: var(--transition); }
.service-feature-item:hover { border-color: rgba(255,215,0,0.3); background: rgba(255,215,0,0.05); }
.service-feature-item i { color: var(--primary); font-size: 1.2rem; margin-top: 4px; flex-shrink: 0; }
.service-feature-item strong { display: block; color: var(--text-white); margin-bottom: 4px; }
.service-feature-item p { color: var(--text-muted); font-size: 0.9rem; margin: 0; }

/* Service Visual Cards */
.service-info-card, .service-stats-card, .service-sectors-card, .service-process-card, .service-academic-card, .service-tools-card {
    background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; text-align: center;
}
.service-info-card h4, .service-stats-card h4, .service-sectors-card h4, .service-process-card h4, .service-academic-card h4, .service-tools-card h4 {
    color: var(--primary); margin-bottom: 16px; font-size: 1rem;
}
.info-card-badge img { max-width: 200px; margin-top: 16px; }
.mini-stat { display: flex; align-items: center; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid var(--border); }
.mini-stat:last-child { border-bottom: none; }
.mini-stat-num { font-family: var(--font-heading); font-size: 1.8rem; font-weight: 800; color: var(--primary); }
.sector-tags { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.sector-tag { padding: 6px 14px; background: rgba(255,215,0,0.08); border: 1px solid rgba(255,215,0,0.2); border-radius: 50px; font-size: 0.85rem; color: var(--text-light); }
.mini-process { display: grid; gap: 12px; }
.mini-process-step { display: flex; align-items: center; gap: 12px; text-align: left; padding: 8px; }
.step-num { background: var(--primary); color: var(--bg-dark); width: 32px; height: 32px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 0.85rem; flex-shrink: 0; }

.academic-levels { text-align: left; list-style: none; }
.academic-levels li { padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 0.9rem; color: var(--text-light); display: flex; align-items: center; gap: 8px; }
.academic-levels li:last-child { border-bottom: none; }
.academic-levels li i { color: var(--success); font-size: 0.8rem; }

.tool-tags { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.tool-tag { padding: 6px 14px; background: rgba(255,215,0,0.1); border: 1px solid rgba(255,215,0,0.2); border-radius: 50px; font-size: 0.85rem; color: var(--primary); font-weight: 600; }

/* ===== TIMELINE ===== */
.timeline { position: relative; max-width: 800px; margin: 0 auto; }
.timeline::before { content: ''; position: absolute; left: 40px; top: 0; bottom: 0; width: 2px; background: var(--border); }
.timeline-item { display: flex; gap: 32px; margin-bottom: 40px; position: relative; }
.timeline-number { width: 80px; height: 80px; background: var(--primary); color: var(--bg-dark); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-family: var(--font-heading); font-weight: 800; font-size: 1.5rem; flex-shrink: 0; position: relative; z-index: 1; }
.timeline-content { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; flex: 1; }
.timeline-icon { color: var(--primary); font-size: 1.5rem; margin-bottom: 12px; }
.timeline-content h3 { font-size: 1.2rem; margin-bottom: 10px; }
.timeline-content p { color: var(--text-muted); margin-bottom: 12px; }
.timeline-details li { padding: 4px 0; color: var(--text-muted); font-size: 0.9rem; padding-left: 16px; position: relative; }
.timeline-details li::before { content: '→'; position: absolute; left: 0; color: var(--primary); }

/* ===== METHODS ===== */
.methods-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
.method-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; text-align: center; transition: var(--transition); }
.method-card:hover { transform: translateY(-4px); border-color: rgba(255,215,0,0.3); }
.method-icon { font-size: 2rem; color: var(--primary); margin-bottom: 16px; }
.method-card h3 { font-size: 1.05rem; margin-bottom: 10px; }
.method-card p { color: var(--text-muted); font-size: 0.9rem; }

/* ===== CALCULATOR ===== */
.calculator-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 36px; max-width: 800px; margin: 0 auto; }
.calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 24px; }
.calc-field label { display: flex; align-items: center; gap: 6px; font-weight: 600; color: var(--text-white); margin-bottom: 8px; font-size: 0.9rem; }
.calc-field label i { color: var(--primary); }
.calc-field input, .calc-field select { width: 100%; padding: 12px 16px; background: var(--bg-dark); border: 1px solid var(--border); border-radius: var(--radius-xs); color: var(--text-white); font-size: 1rem; font-family: var(--font-body); transition: var(--transition); }
.calc-field input:focus, .calc-field select:focus { border-color: var(--primary); outline: none; box-shadow: 0 0 0 3px rgba(255,215,0,0.15); }
.calc-field small { color: var(--text-muted); font-size: 0.8rem; display: block; margin-top: 4px; }
.calculator-result { margin-top: 28px; background: rgba(255,215,0,0.05); border: 1px solid rgba(255,215,0,0.2); border-radius: var(--radius); padding: 28px; text-align: center; }
.result-main { margin-bottom: 20px; }
.result-label { display: block; font-size: 0.9rem; color: var(--text-muted); margin-bottom: 4px; }
.result-number { display: block; font-family: var(--font-heading); font-size: 3.5rem; font-weight: 800; color: var(--primary); }
.result-unit { color: var(--text-muted); }
.result-details { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin-bottom: 16px; }
.result-detail { display: flex; justify-content: space-between; padding: 6px 12px; background: rgba(0,0,0,0.2); border-radius: var(--radius-xs); font-size: 0.9rem; }
.result-detail span:first-child { color: var(--text-muted); }
.result-detail span:last-child { color: var(--text-white); font-weight: 600; }
.result-formula { background: rgba(0,0,0,0.3); padding: 10px; border-radius: var(--radius-xs); font-size: 0.85rem; color: var(--text-muted); }

/* ===== CONTACT ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-info h2 { font-size: 1.6rem; margin-bottom: 12px; }
.contact-info > p { color: var(--text-muted); margin-bottom: 24px; }
.contact-items { display: grid; gap: 16px; margin-bottom: 24px; }
.contact-item { display: flex; gap: 14px; }
.contact-icon { width: 44px; height: 44px; background: rgba(255,215,0,0.1); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: var(--primary); flex-shrink: 0; }
.contact-item strong { display: block; color: var(--text-white); margin-bottom: 2px; }
.contact-item p, .contact-item a { color: var(--text-muted); font-size: 0.95rem; }
.contact-form-wrap { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; }
.contact-form h2 { font-size: 1.4rem; margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: flex; align-items: center; gap: 6px; font-weight: 500; color: var(--text-light); margin-bottom: 6px; font-size: 0.9rem; }
.form-group label i { color: var(--primary); font-size: 0.85rem; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 12px 16px; background: var(--bg-dark); border: 1px solid var(--border); border-radius: var(--radius-xs); color: var(--text-white); font-size: 0.95rem; font-family: var(--font-body); transition: var(--transition); }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--primary); outline: none; box-shadow: 0 0 0 3px rgba(255,215,0,0.15); }
.form-group textarea { resize: vertical; min-height: 100px; }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-muted); }

/* Alerts */
.alert { display: flex; align-items: flex-start; gap: 12px; padding: 16px; border-radius: var(--radius-sm); margin-bottom: 20px; }
.alert-success { background: rgba(0,200,83,0.1); border: 1px solid rgba(0,200,83,0.3); color: var(--success); }
.alert-error { background: rgba(255,23,68,0.1); border: 1px solid rgba(255,23,68,0.3); color: var(--error); }
.alert i { font-size: 1.2rem; margin-top: 2px; }

/* ===== FOOTER ===== */
.footer { background: var(--bg-dark-2); border-top: 1px solid var(--border); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 40px; }
.footer-logo { height: 60px; margin-bottom: 16px; }
.footer-desc { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 16px; }
.footer-badge { display: flex; align-items: center; gap: 8px; color: var(--primary); font-size: 0.85rem; font-weight: 600; margin-bottom: 8px; }
.footer-title { font-size: 1.1rem; margin-bottom: 16px; position: relative; padding-bottom: 10px; }
.footer-title::after { content: ''; position: absolute; bottom: 0; left: 0; width: 30px; height: 2px; background: var(--primary); }
.footer-links li { margin-bottom: 8px; }
.footer-links a { color: var(--text-muted); font-size: 0.9rem; display: flex; align-items: center; gap: 6px; }
.footer-links a:hover { color: var(--primary); }
.footer-links a i { font-size: 0.6rem; }
.footer-contact li { display: flex; gap: 10px; margin-bottom: 12px; font-size: 0.9rem; }
.footer-contact i { color: var(--primary); margin-top: 4px; flex-shrink: 0; }
.footer-contact a { color: var(--text-muted); }
.footer-social { display: flex; gap: 10px; margin-top: 16px; }
.social-link { width: 40px; height: 40px; background: var(--glass); border: 1px solid var(--glass-border); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: var(--text-light); transition: var(--transition); }
.social-link:hover { background: var(--primary); color: var(--bg-dark); border-color: var(--primary); }
.footer-bottom { border-top: 1px solid var(--border); padding: 20px 0; text-align: center; color: var(--text-muted); font-size: 0.85rem; }
.footer-bottom p { margin-bottom: 4px; }

/* WhatsApp Float */
.whatsapp-float { position: fixed; bottom: 24px; right: 24px; width: 56px; height: 56px; background: var(--whatsapp); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.6rem; color: white; box-shadow: 0 4px 20px rgba(37,211,102,0.4); z-index: 999; transition: var(--transition); animation: whatsapp-pulse 2s infinite; }
.whatsapp-float:hover { transform: scale(1.1); color: white; }
@keyframes whatsapp-pulse { 0%, 100% { box-shadow: 0 4px 20px rgba(37,211,102,0.4); } 50% { box-shadow: 0 4px 30px rgba(37,211,102,0.6); } }

/* Scroll Top */
.scroll-top { position: fixed; bottom: 90px; right: 24px; width: 44px; height: 44px; background: var(--primary); color: var(--bg-dark); border: none; border-radius: 50%; font-size: 1.1rem; cursor: pointer; z-index: 999; opacity: 0; visibility: hidden; transition: var(--transition); display: flex; align-items: center; justify-content: center; }
.scroll-top.visible { opacity: 1; visibility: visible; }
.scroll-top:hover { transform: translateY(-3px); }

/* ===== ADMIN ===== */
.admin-login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.admin-login-box { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 40px; width: 400px; text-align: center; }
.admin-login-logo { width: 150px; margin-bottom: 20px; }
.admin-login-box h2 { margin-bottom: 24px; font-size: 1.3rem; }
.admin-back-link { display: block; margin-top: 16px; color: var(--text-muted); font-size: 0.9rem; }
.admin-header { background: var(--bg-dark-2); border-bottom: 1px solid var(--border); padding: 12px 0; position: sticky; top: 0; z-index: 100; }
.admin-header-inner { display: flex; align-items: center; justify-content: space-between; }
.admin-logo { display: flex; align-items: center; gap: 12px; color: var(--text-white); font-weight: 600; }
.admin-nav { display: flex; gap: 10px; }
.admin-main { padding: 32px 0; }
.admin-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 28px; }
.admin-stat-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; display: flex; align-items: center; gap: 16px; }
.admin-stat-icon { width: 50px; height: 50px; background: rgba(255,215,0,0.1); border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 1.3rem; color: var(--primary); }
.admin-stat-num { display: block; font-family: var(--font-heading); font-size: 1.8rem; font-weight: 700; color: var(--text-white); }
.admin-stat-label { font-size: 0.85rem; color: var(--text-muted); }
.admin-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 24px; overflow: hidden; }
.admin-card-header { padding: 20px 24px; border-bottom: 1px solid var(--border); }
.admin-card-header h2 { font-size: 1.2rem; }
.admin-form { padding: 24px; }
.admin-card-sub { background: rgba(255,255,255,0.02); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 20px; margin-bottom: 20px; }
.admin-card-sub h3 { font-size: 1rem; margin-bottom: 16px; color: var(--primary); }
.admin-empty { padding: 40px; text-align: center; color: var(--text-muted); }
.admin-empty i { font-size: 2.5rem; margin-bottom: 12px; display: block; color: var(--border); }
.admin-table-wrap { overflow-x: auto; }
.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th { padding: 12px 16px; text-align: left; font-size: 0.85rem; color: var(--text-muted); text-transform: uppercase; border-bottom: 1px solid var(--border); }
.admin-table td { padding: 14px 16px; border-bottom: 1px solid var(--border); font-size: 0.95rem; }
.admin-table tr:hover { background: rgba(255,255,255,0.02); }
.file-input { padding: 8px !important; }

/* ===== ANIMATIONS ===== */
.animate-fade-in { opacity: 0; animation: fadeIn 0.8s forwards; }
.animate-slide-up { opacity: 0; transform: translateY(30px); animation: slideUp 0.8s forwards; }
.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
.animate-on-scroll { opacity: 0; transform: translateY(20px); transition: opacity 0.6s, transform 0.6s; }
.animate-on-scroll.visible { opacity: 1; transform: translateY(0); }
@keyframes fadeIn { to { opacity: 1; } }
@keyframes slideUp { to { opacity: 1; transform: translateY(0); } }

/* ===== MODAL LATEST STUDY ===== */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.8); backdrop-filter: blur(5px); z-index: 9999; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: opacity 0.3s, visibility 0.3s; padding: 20px; }
.modal-overlay.active { opacity: 1; visibility: visible; }
.modal-content { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 40px; max-width: 480px; width: 100%; text-align: center; position: relative; box-shadow: 0 20px 40px rgba(0,0,0,0.6); transform: translateY(30px); transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275); }
.modal-overlay.active .modal-content { transform: translateY(0); }
.modal-close { position: absolute; top: 15px; right: 15px; background: rgba(255,255,255,0.05); border: none; color: var(--text-muted); width: 36px; height: 36px; border-radius: 50%; cursor: pointer; transition: var(--transition); display: flex; align-items: center; justify-content: center; font-size: 1.2rem; }
.modal-close:hover { background: var(--error); color: white; transform: rotate(90deg); }
.modal-icon { width: 70px; height: 70px; background: rgba(255,215,0,0.1); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 2rem; color: var(--primary); margin: 0 auto 20px; }
.ring-animation { animation: ring 2s infinite; }
.modal-title { font-size: 1.5rem; margin-bottom: 10px; color: var(--text-white); }
.modal-text { color: var(--text-muted); margin-bottom: 24px; font-size: 0.95rem; }
.modal-study-card { background: rgba(255,255,255,0.03); border: 1px solid var(--border); padding: 20px; border-radius: var(--radius-sm); margin-bottom: 28px; text-align: left; transition: var(--transition); border-left: 3px solid var(--primary); }
.modal-study-card:hover { background: rgba(255,215,0,0.05); }
.modal-study-card h4 { font-size: 1.1rem; margin-bottom: 8px; color: var(--primary); line-height: 1.4; }
.modal-date { font-size: 0.85rem; color: var(--text-muted); display: flex; align-items: center; gap: 6px; }
.modal-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.modal-actions .btn { padding: 12px 24px; font-size: 0.95rem; }

@keyframes ring {
  0% { transform: rotate(0); }
  5% { transform: rotate(15deg); }
  10% { transform: rotate(-10deg); }
  15% { transform: rotate(5deg); }
  20% { transform: rotate(-5deg); }
  25% { transform: rotate(0); }
  100% { transform: rotate(0); }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 992px) {
    .hero-content { grid-template-columns: 1fr; text-align: center; }
    .hero-subtitle { margin: 0 auto 32px; }
    .hero-actions { justify-content: center; }
    .hero-image { order: -1; }
    .hero-logo-img { max-width: 250px; }
    .credentials-grid { grid-template-columns: 1fr 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .about-grid { grid-template-columns: 1fr; }
    .mvv-grid { grid-template-columns: 1fr; }
    .service-detail, .service-detail.reverse { grid-template-columns: 1fr; }
    .service-detail.reverse .service-detail-content { order: 1; }
    .service-detail.reverse .service-detail-visual { order: 2; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .team-featured { flex-direction: column; text-align: center; }
    .legal-grid { grid-template-columns: 1fr; }
    .calc-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nav-toggle { display: block; }
    .nav { position: fixed; top: 75px; left: 0; right: 0; background: rgba(10,10,10,0.98); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border); padding: 20px; transform: translateY(-110%); transition: var(--transition); }
    .nav.active { transform: translateY(0); }
    .nav-list { flex-direction: column; }
    .nav-link { width: 100%; text-align: center; padding: 12px; }
    .credentials-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .hero-title { font-size: 2rem; }
    .publications-grid { grid-template-columns: 1fr; }
    .admin-stats { grid-template-columns: 1fr; }
    .result-details { grid-template-columns: 1fr; }
}