/* ============================================
   CSS Variables / Design Tokens
   ============================================ */
:root {
    /* Colors - Based on logo palette */
    --color-primary: #1a2332;
    --color-primary-dark: #0f1621;
    --color-primary-light: #2d3e50;

    --color-secondary: #c0c4c8;
    --color-secondary-dark: #9fa3a7;
    --color-secondary-light: #e0e2e4;

    --color-accent: #3498db;
    --color-accent-dark: #2980b9;
    --color-accent-light: #5dade2;

    --color-success: #27ae60;
    --color-warning: #f39c12;
    --color-error: #e74c3c;

    --color-text-primary: #2c3e50;
    --color-text-secondary: #5a6c7d;
    --color-text-light: #7f8c8d;
    --color-text-white: #ffffff;

    --color-bg-light: #f8f9fa;
    --color-bg-white: #ffffff;
    --color-bg-dark: #1a2332;

    --color-border: #e1e8ed;

    /* Typography */
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-secondary: 'Georgia', serif;

    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;

    /* Container */
    --container-max-width: 1200px;
    --container-padding: 1rem;

    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
    --z-tooltip: 500;
}

/* ============================================
   Reset & Base Styles
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background-color: var(--color-bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-base);
}

ul {
    list-style: none;
}

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

/* ============================================
   Utility Classes
   ============================================ */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-secondary));
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-top: var(--spacing-lg);
}

/* Button Styles */
.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    text-align: center;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-text-white);
    border-color: var(--color-accent);
}

.btn-primary:hover {
    background-color: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-accent);
    border-color: var(--color-accent);
}

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

/* ============================================
   Header / Navigation
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: #2c2c2c;
    box-shadow: var(--shadow-md);
    z-index: var(--z-fixed);
    transition: all var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-lg);
    background-color: #1a1a1a;
}

.navbar {
    padding: var(--spacing-md) 0;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 60px;
    width: auto;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-link {
    font-weight: var(--font-weight-medium);
    color: var(--color-secondary-light);
    position: relative;
    padding: var(--spacing-sm) 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-secondary);
    transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text-white);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
    z-index: var(--z-fixed);
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--color-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    padding: var(--spacing-4xl) 0;
    margin-top: 78px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(30deg, rgba(26, 35, 50, 0.03) 12%, transparent 12.5%, transparent 87%, rgba(26, 35, 50, 0.03) 87.5%, rgba(26, 35, 50, 0.03)),
        linear-gradient(150deg, rgba(26, 35, 50, 0.03) 12%, transparent 12.5%, transparent 87%, rgba(26, 35, 50, 0.03) 87.5%, rgba(26, 35, 50, 0.03)),
        linear-gradient(30deg, rgba(26, 35, 50, 0.03) 12%, transparent 12.5%, transparent 87%, rgba(26, 35, 50, 0.03) 87.5%, rgba(26, 35, 50, 0.03));
    background-size: 80px 140px;
    opacity: 0.5;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, transparent 30%, rgba(248, 249, 250, 0.3) 100%);
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
    line-height: var(--line-height-tight);
}

.hero-title .highlight {
    color: var(--color-accent);
    position: relative;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: var(--line-height-relaxed);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-buttons .btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.hero-buttons .btn-secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-text-white);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}

.scroll-indicator a {
    display: block;
    color: var(--color-primary);
    font-size: var(--font-size-2xl);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* ============================================
   About Section
   ============================================ */
.about {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-bg-white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-text h3 {
    font-size: var(--font-size-2xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.about-text p {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: var(--line-height-relaxed);
}

.about-values {
    margin-top: var(--spacing-2xl);
}

.value-item {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background-color: var(--color-bg-light);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.value-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
}

.value-item i {
    font-size: var(--font-size-3xl);
    color: var(--color-accent);
    flex-shrink: 0;
}

.value-item h4 {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.value-item p {
    font-size: var(--font-size-base);
    margin-bottom: 0;
}

.about-image {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 500px;
    background-color: var(--color-bg-light);
}

.stats {
    position: absolute;
    bottom: var(--spacing-xl);
    left: var(--spacing-xl);
    right: var(--spacing-xl);
    display: flex;
    gap: var(--spacing-lg);
    background-color: rgba(255, 255, 255, 0.95);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
}

.stat-item {
    flex: 1;
    text-align: center;
}

.stat-number {
    display: block;
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-accent);
    line-height: 1;
}

.stat-number::after {
    content: '+';
}

.stat-label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--spacing-sm);
}

/* ============================================
   Services Section
   ============================================ */
.services {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    background-color: var(--color-bg-white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border-top: 3px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-top-color: var(--color-accent);
}

.service-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.service-icon i {
    font-size: var(--font-size-3xl);
    color: var(--color-text-white);
}

.service-card h3 {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.service-card p {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

/* ============================================
   Team Section
   ============================================ */
.team {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-bg-white);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-2xl);
}

.team-member {
    background-color: var(--color-bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    text-align: center;
    padding: var(--spacing-xl);
}

.team-member:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.member-photo {
    width: 150px;
    height: 150px;
    border-radius: var(--radius-full);
    overflow: hidden;
    margin: 0 auto var(--spacing-lg);
    border: 4px solid var(--color-accent);
}

.member-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    background-color: var(--color-bg-light);
}

.team-member h3 {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.member-role {
    font-size: var(--font-size-base);
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
}

.member-crc {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.member-bio {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

/* ============================================
   Differentials Section
   ============================================ */
.differentials {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
}

.differentials .section-title {
    color: var(--color-text-white);
}

.differentials .section-subtitle {
    color: var(--color-secondary-light);
}

.differentials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.differential-item {
    background-color: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    text-align: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all var(--transition-base);
}

.differential-item:hover {
    background-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.differential-icon {
    width: 80px;
    height: 80px;
    background-color: var(--color-accent);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
}

.differential-icon i {
    font-size: var(--font-size-3xl);
    color: var(--color-text-white);
}

.differential-item h3 {
    font-size: var(--font-size-xl);
    color: var(--color-text-white);
    margin-bottom: var(--spacing-md);
}

.differential-item p {
    font-size: var(--font-size-base);
    color: var(--color-secondary-light);
    line-height: var(--line-height-relaxed);
}

/* ============================================
   Contact Section
   ============================================ */
.contact {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-bg-light);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-3xl);
}

.contact-info h3 {
    font-size: var(--font-size-2xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.contact-info > p {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: var(--line-height-relaxed);
}

.info-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.info-item {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background-color: var(--color-bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.info-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.info-item i {
    font-size: var(--font-size-2xl);
    color: var(--color-accent);
    flex-shrink: 0;
    width: 40px;
    text-align: center;
}

.info-item h4 {
    font-size: var(--font-size-base);
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.info-item p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.contact-form-wrapper {
    background-color: var(--color-bg-white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--spacing-md);
    font-size: var(--font-size-base);
    font-family: inherit;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    background-color: var(--color-bg-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-form .btn {
    margin-top: var(--spacing-md);
}

.map-wrapper {
    margin-top: var(--spacing-3xl);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.map-placeholder {
    width: 100%;
    height: 400px;
    background-color: var(--color-bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background-color: var(--color-primary);
    color: var(--color-text-white);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-lg);
    color: var(--color-secondary);
}

.footer-logo {
    height: 60px;
    width: auto;
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    font-size: var(--font-size-sm);
    color: var(--color-secondary-light);
    line-height: var(--line-height-relaxed);
}

.footer-section ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-section ul li a {
    font-size: var(--font-size-sm);
    color: var(--color-secondary-light);
    transition: all var(--transition-base);
}

.footer-section ul li a:hover {
    color: var(--color-accent);
    padding-left: var(--spacing-sm);
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-secondary-light);
}

.footer-contact i {
    color: var(--color-accent);
    width: 20px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
}

.footer-bottom p {
    font-size: var(--font-size-sm);
    color: var(--color-secondary-light);
    margin-bottom: var(--spacing-xs);
}

/* ============================================
   WhatsApp Float Button
   ============================================ */
.whatsapp-float {
    position: fixed;
    bottom: var(--spacing-2xl);
    right: var(--spacing-xl);
    width: 60px;
    height: 60px;
    background-color: #25d366;
    color: var(--color-text-white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-3xl);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-fixed);
    transition: all var(--transition-base);
    animation: pulse 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 10px 30px rgba(37, 211, 102, 0.5);
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
    }
}

/* ============================================
   Back to Top Button
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-2xl);
    right: calc(var(--spacing-xl) + 80px);
    width: 50px;
    height: 50px;
    background-color: var(--color-accent);
    color: var(--color-text-white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-fixed);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--color-accent-dark);
    transform: translateY(-5px);
}