/* ========================================
   MCAT - Colectores de Polvo Industriales
   Estilos Base v2.0 - Identidad MCAT 2026
   ======================================== */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;900&family=Inter:wght@400;500;600;700&display=swap');

/* Variables CSS - COLORES OFICIALES MCAT 2026 */
:root {
    /* PRIMARY BRAND COLORS MCAT 2026 */
    --color-navy: #0B2035;       /* 60% — header, hero, footer */
    --color-blue: #0099BE;       /* 30% — CTAs, links, accent */
    --color-light-gray: #E8ECF0; /* 5% — section backgrounds */
    --color-silver: #A0A8B0;     /* 5% — borders, secondary text */
    --color-black: #0D0D1A;      /* dark text */
    --color-white: #FFFFFF;
    
    /* DERIVED COLORS */
    --color-navy-dark: #071525;
    --color-navy-mid: #1A3A5C;
    --color-blue-dark: #007A99;
    
    /* LEGACY MAPPING (para compatibilidad) */
    --primary: var(--color-navy);
    --primary-dark: var(--color-navy-dark);
    --secondary: var(--color-blue);
    --secondary-dark: var(--color-blue-dark);
    --dark: var(--color-black);
    
    /* GRAY SCALE */
    --gray-900: #111827;
    --gray-700: #374151;
    --gray-500: #6B7280;
    --gray-300: #D1D5DB;
    --gray-100: #F3F4F6;
    
    /* SEMANTIC */
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    
    /* TYPOGRAPHY */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Outfit', var(--font-primary);
    
    /* SHADOWS */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.2);
    
    /* BORDER RADIUS */
    --radius-sm: 4px;
    --radius: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 50px;
    
    /* TRANSITIONS */
    --transition: all 0.3s ease;
    --transition-fast: all 0.15s ease;
    --transition-slow: all 0.5s ease;
}

/* ========================================
   RESET & BASE
   ======================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--gray-700);
    background: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-black);
    line-height: 1.2;
    font-weight: 700;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 900; }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); font-weight: 700; }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); font-weight: 600; }
h4 { font-size: 1.25rem; font-weight: 600; }

p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

a {
    color: var(--color-blue);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--color-blue-dark);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: 1rem;
}

/* ========================================
   CONTAINER
   ======================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ========================================
   HEADER / NAVIGATION
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--color-navy);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-navy), var(--color-navy-dark));
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-weight: 900;
    font-size: 1.25rem;
}

.nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-list {
    display: flex;
    gap: 0.5rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.5rem 1rem;
    color: var(--gray-700);
    font-weight: 500;
    border-radius: var(--radius);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-navy);
    background: var(--gray-100);
}

.nav-dropdown {
    position: relative;
}

.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: var(--color-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    padding: 0.5rem;
}

.nav-dropdown:hover .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-dropdown-item {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--gray-700);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-dropdown-item:hover {
    background: var(--gray-100);
    color: var(--color-navy);
}

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--color-blue);
    color: var(--color-white);
    font-weight: 600;
    border-radius: var(--radius);
    transition: var(--transition);
}

.nav-cta:hover {
    background: var(--color-blue-dark);
    color: var(--color-white);
    transform: translateY(-2px);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-black);
    transition: var(--transition);
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    position: relative;
    padding: 10rem 0 5rem;
    background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-mid) 100%);
    color: var(--color-white);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(4px);
}

.hero-badge svg {
    width: 16px;
    height: 16px;
}

.hero-title {
    color: var(--color-white);
    margin-bottom: 1.5rem;
    font-weight: 900;
}

.hero-title .accent {
    color: var(--color-blue);
}

.hero-description {
    font-size: 1.25rem;
    color: rgba(255,255,255,0.85);
    margin-bottom: 2rem;
    max-width: 600px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius);
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--color-blue);
    color: var(--color-white);
}

.btn-primary:hover {
    background: var(--color-blue-dark);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 153, 190, 0.35);
}

.btn-secondary {
    background: var(--color-navy);
    color: var(--color-white);
}

.btn-secondary:hover {
    background: var(--color-navy-dark);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-white);
}

.btn-outline:hover {
    background: var(--color-white);
    color: var(--color-navy);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* ========================================
   SECTIONS
   ======================================== */
.section {
    padding: 5rem 0;
}

.section-sm {
    padding: 3rem 0;
}

.section-lg {
    padding: 7rem 0;
}

.section-dark {
    background: var(--color-navy);
    color: var(--color-white);
}

.section-gray {
    background: var(--color-light-gray);
}

.section-light {
    background: var(--color-white);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 3rem;
}

.section-header h2 {
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--gray-500);
    font-size: 1.125rem;
}

.section-dark .section-header p {
    color: rgba(255,255,255,0.7);
}

/* ========================================
   CARDS
   ======================================== */
.card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--gray-100);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-blue);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-blue), var(--color-blue-dark));
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--color-black);
}

.card-text {
    color: var(--gray-500);
}

/* Grid Layouts */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.grid-5 {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
}

@media (max-width: 1024px) {
    .grid-4, .grid-5 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4, .grid-5 { grid-template-columns: 1fr; }
}

/* ========================================
   FEATURE LIST
   ======================================== */
.feature-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.feature-item {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--color-white);
    border-radius: var(--radius);
    border: 1px solid var(--gray-300);
    transition: var(--transition);
}

.feature-item:hover {
    border-color: var(--color-blue);
    box-shadow: var(--shadow);
}

.feature-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: rgba(0, 153, 190, 0.1);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-blue);
}

.feature-content h4 {
    margin-bottom: 0.5rem;
}

.feature-content p {
    color: var(--gray-500);
    font-size: 0.9375rem;
    margin: 0;
}

/* ========================================
   SPECS TABLE
   ======================================== */
.specs-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.specs-table th,
.specs-table td {
    padding: 1rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--gray-300);
}

.specs-table th {
    background: var(--color-navy);
    color: var(--color-white);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.specs-table tr:last-child td {
    border-bottom: none;
}

.specs-table tr:hover td {
    background: var(--gray-100);
}

/* ========================================
   FAQ ACCORDION
   ======================================== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--color-white);
    border-radius: var(--radius);
    margin-bottom: 1rem;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    border: 1px solid var(--gray-200);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    background: var(--color-white);
    text-align: left;
    font-weight: 600;
    color: var(--color-black);
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--gray-100);
    color: var(--color-blue);
}

.faq-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    color: var(--color-blue);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer-content {
    padding: 0 1.5rem 1.5rem;
    color: var(--gray-500);
    line-height: 1.7;
}

/* ========================================
   CTA SECTION
   ======================================== */
.cta-section {
    background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-mid) 100%);
    padding: 4rem 0;
    text-align: center;
}

.cta-section h2 {
    color: var(--color-white);
    margin-bottom: 1rem;
}

.cta-section p {
    color: rgba(255,255,255,0.9);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: var(--color-navy-dark);
    color: rgba(255,255,255,0.7);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--color-white);
    margin-bottom: 1rem;
}

.footer-brand p {
    color: rgba(255,255,255,0.6);
    font-size: 0.9375rem;
    line-height: 1.7;
}

.footer-column h4 {
    color: var(--color-white);
    font-size: 1rem;
    margin-bottom: 1.25rem;
    font-weight: 600;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a {
    color: rgba(255,255,255,0.6);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--color-blue);
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: rgba(255,255,255,0.6);
}

.footer-contact-item svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    color: var(--color-blue);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-bottom p {
    color: rgba(255,255,255,0.5);
    font-size: 0.875rem;
    margin: 0;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius);
    color: var(--color-white);
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--color-blue);
    transform: translateY(-2px);
}

/* ========================================
   CONTACT FORM
   ======================================== */
.contact-form {
    background: var(--color-white);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: 0.5rem;
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--color-white);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-blue);
    box-shadow: 0 0 0 3px rgba(0, 153, 190, 0.15);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

@media (max-width: 480px) {
    .form-row { grid-template-columns: 1fr; }
}

/* ========================================
   PAGE HEADER (Interiors)
   ======================================== */
.page-header {
    padding: 8rem 0 3rem;
    background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-mid) 100%);
    color: var(--color-white);
    text-align: center;
}

.page-header h1 {
    color: var(--color-white);
    margin-bottom: 1rem;
}

.page-header p {
    color: rgba(255,255,255,0.8);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}

.breadcrumb a {
    color: rgba(255,255,255,0.7);
}

.breadcrumb a:hover {
    color: var(--color-white);
}

.breadcrumb span {
    color: var(--color-blue);
}

/* ========================================
   CASE STUDY CARD
   ======================================== */
.case-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.case-card-image {
    height: 200px;
    background: linear-gradient(135deg, var(--color-navy), var(--color-navy-mid));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 3rem;
}

.case-card-content {
    padding: 1.5rem;
}

.case-card-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(0, 153, 190, 0.1);
    color: var(--color-blue);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: 0.75rem;
}

.case-card h3 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
}

.case-card p {
    color: var(--gray-500);
    font-size: 0.9375rem;
    margin-bottom: 1rem;
}

.case-metrics {
    display: flex;
    gap: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--gray-300);
}

.case-metric {
    text-align: center;
}

.case-metric-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-blue);
}

.case-metric-label {
    font-size: 0.75rem;
    color: var(--gray-500);
    text-transform: uppercase;
}

/* ========================================
   ALERT / NOTICE BOX
   ======================================== */
.alert {
    padding: 1.25rem 1.5rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.alert-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
}

.alert-info {
    background: rgba(0, 153, 190, 0.1);
    border-left: 4px solid var(--color-blue);
    color: var(--gray-700);
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border-left: 4px solid var(--success);
    color: var(--gray-700);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border-left: 4px solid var(--warning);
    color: var(--gray-700);
}

/* ========================================
   TABS
   ======================================== */
.tabs {
    margin-bottom: 2rem;
}

.tabs-nav {
    display: flex;
    gap: 0.5rem;
    border-bottom: 2px solid var(--gray-300);
    margin-bottom: 1.5rem;
}

.tab-btn {
    padding: 1rem 1.5rem;
    font-weight: 600;
    color: var(--gray-500);
    background: none;
    border: none;
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

.tab-btn:hover {
    color: var(--color-blue);
}

.tab-btn.active {
    color: var(--color-blue);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-blue);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* ========================================
   FLOATING ACTION BAR - Expandable Contact Menu
   MCAT 2026 - Slide Up Experience
   ======================================== */
.fab-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

/* Main Button */
.fab-main-btn {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-blue), var(--color-blue-dark));
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 32px rgba(0, 153, 190, 0.4);
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    position: relative;
    z-index: 2;
    margin-top: 16px;
}

.fab-main-btn .fab-icon { display: block; }
.fab-main-btn .fab-close-icon { display: none; }
.fab-main-btn.active .fab-icon { display: none; }
.fab-main-btn.active .fab-close-icon { display: block; }

.fab-main-btn svg {
    width: 28px;
    height: 28px;
    color: white;
    transition: transform 0.3s ease;
}

.fab-main-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 40px rgba(0, 153, 190, 0.5);
}

.fab-main-btn.active {
    transform: rotate(180deg);
}

/* Contact Menu */
.fab-contact-menu {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    padding-bottom: 0;
}

.fab-container.active .fab-contact-menu {
    max-height: 500px;
    opacity: 1;
    padding-bottom: 8px;
}

.fab-menu-label {
    background: var(--color-navy);
    color: white;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 8px;
    white-space: nowrap;
    transform: translateY(-20px);
    opacity: 0;
    transition: all 0.4s ease 0.1s;
}

.fab-container.active .fab-menu-label {
    transform: translateY(0);
    opacity: 1;
}

/* Contact Items */
.fab-contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    text-decoration: none;
    color: var(--color-black);
    font-weight: 500;
    transform: translateX(100px);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    cursor: pointer;
    border: 2px solid transparent;
    min-width: 200px;
}

.fab-container.active .fab-contact-item:nth-child(2) { transform: translateX(0); opacity: 1; transition-delay: 0.1s; }
.fab-container.active .fab-contact-item:nth-child(3) { transform: translateX(0); opacity: 1; transition-delay: 0.15s; }
.fab-container.active .fab-contact-item:nth-child(4) { transform: translateX(0); opacity: 1; transition-delay: 0.2s; }
.fab-container.active .fab-contact-item:nth-child(5) { transform: translateX(0); opacity: 1; transition-delay: 0.25s; }

.fab-contact-item:hover {
    transform: translateX(-4px) !important;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
    border-color: var(--color-blue);
}

.fab-item-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.fab-item-icon svg {
    width: 22px;
    height: 22px;
}

.fab-item-content {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.fab-item-title {
    font-weight: 600;
    font-size: 0.9rem;
}

.fab-item-subtitle {
    font-size: 0.75rem;
    color: var(--gray-500);
}

/* WhatsApp variant */
.fab-whatsapp .fab-item-icon {
    background: #25D366;
    color: white;
}

/* Chatbot variant */
.fab-chatbot .fab-item-icon {
    background: linear-gradient(135deg, var(--color-navy), var(--color-blue));
    color: white;
}

/* Email variant */
.fab-email .fab-item-icon {
    background: var(--color-navy-mid);
    color: white;
}

/* Phone variant */
.fab-phone .fab-item-icon {
    background: var(--color-blue);
    color: white;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .fab-container {
        bottom: 16px;
        right: 16px;
    }
    
    .fab-contact-item {
        min-width: 180px;
        padding: 10px 12px;
    }
    
    .fab-item-icon {
        width: 36px;
        height: 36px;
    }
    
    .fab-item-icon svg {
        width: 18px;
        height: 18px;
    }
}

/* Chat Modal */
.chatbot-modal {
    position: fixed;
    bottom: 100px;
    left: 24px;
    width: 380px;
    max-width: calc(100vw - 48px);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
    overflow: hidden;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.95);
    transition: var(--transition);
}

.chatbot-modal.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

@media (max-width: 768px) {
    .chatbot-modal {
        left: 16px;
        right: 16px;
        bottom: 120px;
        width: auto;
    }
}

.chatbot-header {
    background: linear-gradient(135deg, var(--color-navy), var(--color-navy-mid));
    padding: 1.5rem;
    color: white;
    position: relative;
}

.chatbot-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Ccircle cx='20' cy='20' r='2'/%3E%3C/g%3E%3C/svg%3E");
}

.chatbot-header-content {
    position: relative;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.chatbot-avatar {
    width: 48px;
    height: 48px;
    background: var(--color-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.chatbot-info h4 {
    color: white;
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.chatbot-info p {
    color: rgba(255,255,255,0.8);
    font-size: 0.875rem;
    margin: 0;
}

.chatbot-close {
    position: absolute;
    top: 0;
    right: 0;
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 0.5rem;
    opacity: 0.8;
    transition: var(--transition);
}

.chatbot-close:hover {
    opacity: 1;
    transform: scale(1.1);
}

.chatbot-body {
    padding: 1.5rem;
}

.chatbot-message {
    background: var(--gray-100);
    padding: 1rem 1.25rem;
    border-radius: var(--radius-lg);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.chatbot-message strong {
    color: var(--color-navy);
}

.chatbot-options {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.chatbot-option {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--color-light-gray);
    border: 2px solid var(--gray-300);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    color: var(--color-black);
    font-weight: 500;
}

.chatbot-option:hover {
    border-color: var(--color-blue);
    background: white;
    transform: translateX(4px);
}

.chatbot-option-icon {
    width: 40px;
    height: 40px;
    background: var(--color-navy);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

/* ========================================
   UTILITIES
   ======================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--color-blue); }
.text-navy { color: var(--color-navy); }
.text-muted { color: var(--gray-500); }

.bg-primary { background: var(--color-blue); }
.bg-navy { background: var(--color-navy); }
.bg-dark { background: var(--color-black); }
.bg-gray { background: var(--gray-100); }
.bg-light-gray { background: var(--color-light-gray); }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.py-1 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-2 { padding-top: 1rem; padding-bottom: 1rem; }
.py-3 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.py-4 { padding-top: 2rem; padding-bottom: 2rem; }

.form-input.error,
.form-textarea.error,
.form-select.error {
    border-color: var(--error);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}
.visible { display: block !important; }

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1024px) {
    .nav-list { display: none; }
    .mobile-toggle { display: flex; }
    
    .nav.mobile-open .nav-list {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-white);
        padding: 1rem;
        box-shadow: var(--shadow-lg);
    }
}

@media (max-width: 768px) {
    .hero { padding: 8rem 0 4rem; }
    .section { padding: 3rem 0; }
    .section-lg { padding: 4rem 0; }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
}

/* ========================================
   ANIMATIONS - LIQUID APPLE INSPIRED
   ======================================== */
@keyframes liquidFlow {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-8px) scale(1.02); }
}

@keyframes fadeSlideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 0 20px rgba(0, 153, 190, 0.3); }
    50% { box-shadow: 0 0 40px rgba(0, 153, 190, 0.6); }
}

@keyframes morphShape {
    0%, 100% { border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; }
    25% { border-radius: 58% 42% 75% 25% / 76% 46% 54% 24%; }
    50% { border-radius: 50% 50% 33% 67% / 55% 22% 78% 45%; }
    75% { border-radius: 33% 67% 58% 42% / 63% 68% 32% 37%; }
}

@keyframes floatBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

@keyframes waveMotion {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Animation Classes */
.animate-liquid { animation: liquidFlow 3s ease-in-out infinite; }
.animate-fade-up { animation: fadeSlideUp 0.6s ease-out forwards; }
.animate-pulse-glow { animation: pulseGlow 2s ease-in-out infinite; }
.animate-morph { animation: morphShape 8s ease-in-out infinite; }
.animate-float { animation: floatBounce 3s ease-in-out infinite; }
.animate-wave { animation: waveMotion 10s ease infinite; }
.animate-fade-in { animation: fadeIn 0.5s ease forwards; }
.animate-scale-in { animation: scaleIn 0.4s ease forwards; }
.animate-pulse { animation: pulse 2s infinite; }
.animate-gradient { 
    background-size: 200% 200%;
    animation: gradientShift 8s ease infinite; 
}

/* Scroll Animation Setup */
.scroll-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-animate.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger Animation Delays */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }

/* ========================================
   CARD ICON TOP - MCAT
   ======================================== */
.card-icon-top {
    height: 130px;
    border-radius: var(--radius) var(--radius) 0 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.section-dark .section-header h2 {
    color: #ffffff !important;
}

.section-dark .section-header p {
    color: rgba(255,255,255,0.8) !important;
}

/* ========================================
   LANGUAGE FLAG BUTTON
   ======================================== */
.lang-flag-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.3);
    background: rgba(255,255,255,0.1);
    cursor: pointer;
    transition: all 200ms ease;
    padding: 0;
    margin-left: 8px;
}
.lang-flag-btn:hover {
    border-color: #0099BE;
    background: rgba(0,153,190,0.15);
    transform: scale(1.05);
}
.lang-flag-btn svg {
    width: 24px;
    height: 18px;
    border-radius: 2px;
}