/* ============================================
   LENHAC ROCKET - MAIN STYLESHEET
   ============================================ */

/* CSS Variables */
:root {
    /* Colors */
    --color-primary: #2D5016;
    --color-primary-light: #3d6a1f;
    --color-primary-dark: #1e3710;
    --color-secondary: #DC2626;
    --color-secondary-light: #ef4444;
    --color-white: #FFFFFF;
    --color-black: #000000;
    --color-grey-50: #f9fafb;
    --color-grey-100: #f3f4f6;
    --color-grey-200: #e5e7eb;
    --color-grey-300: #d1d5db;
    --color-grey-400: #9ca3af;
    --color-grey-500: #6b7280;
    --color-grey-600: #4b5563;
    --color-grey-700: #374151;
    --color-grey-800: #1f2937;
    --color-grey-900: #111827;

    /* Typography */
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-blog: 'Merriweather', Georgia, serif;
    --font-code: 'JetBrains Mono', monospace;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 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), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;

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

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-grey-800);
    background-color: var(--color-white);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-content {
    flex: 1;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-grey-900);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-md);
}

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

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 500;
    line-height: 1.5;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: var(--color-white);
}

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

.btn-secondary:hover {
    background-color: var(--color-secondary-light);
    border-color: var(--color-secondary-light);
    color: var(--color-white);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

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

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

.btn-white:hover {
    background-color: var(--color-grey-100);
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
}

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

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1400px;
    padding: 0 24px;
}

.navbar-brand {
    display: flex;
    align-items: center;
}

.navbar-brand .logo {
    height: 40px;
    width: auto;
}

.navbar-brand .logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.navbar-nav {
    display: flex;
    align-items: center;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-item {
    position: relative;
}

.nav-link {
    font-weight: 500;
    color: var(--color-grey-700);
    padding: var(--spacing-sm) 0;
    position: relative;
}

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

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

.navbar-cta {
    margin-left: var(--spacing-lg);
}

/* Dropdown Arrow */
.dropdown-arrow {
    font-size: 0.65rem;
    margin-left: 4px;
    transition: transform 0.2s ease;
}

.nav-item:hover .dropdown-arrow {
    transform: rotate(180deg);
}

/* Services Dropdown */
.nav-item.has-dropdown {
    position: relative;
}

.nav-item.has-dropdown .dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.2s ease;
    z-index: 1000;
    padding: 8px 0;
}

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

.dropdown-content {
    padding: 0;
}

.dropdown-item {
    display: block;
    padding: 10px 16px;
    color: var(--color-grey-700);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.15s ease;
}

.dropdown-item:hover {
    background: var(--color-grey-50);
    color: var(--color-primary);
}

.dropdown-item.view-all {
    color: var(--color-primary);
    font-weight: 500;
}

.dropdown-divider {
    height: 1px;
    background: var(--color-grey-200);
    margin: 8px 0;
}

/* Mega Menu */
.nav-item.has-megamenu {
    position: static;
}

.mega-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.25s ease;
    z-index: 1000;
    border-top: 3px solid var(--color-primary);
}

.nav-item.has-megamenu:hover .mega-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mega-menu-content {
    display: flex;
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
    gap: 24px;
}

.mega-column {
    flex: 1;
    min-width: 0;
}

.mega-column-header {
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--color-grey-200);
}

.mega-column-header a {
    font-weight: 600;
    color: var(--color-grey-900);
    text-decoration: none;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.mega-column-header a:hover {
    color: var(--color-primary);
}

.mega-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mega-list li {
    margin-bottom: 6px;
}

.mega-list a {
    display: block;
    padding: 6px 0;
    color: var(--color-grey-600);
    text-decoration: none;
    font-size: 0.85rem;
    line-height: 1.4;
    transition: color 0.15s ease;
}

.mega-list a:hover {
    color: var(--color-primary);
}

.view-all-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 12px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-primary);
    text-decoration: none;
}

.view-all-link:hover {
    text-decoration: underline;
}

.view-all-link i {
    font-size: 0.7rem;
}

/* AI Research Featured Panel */
.mega-column.mega-featured {
    flex: 0 0 240px;
}

.featured-panel {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-radius: 12px;
    padding: 24px;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.featured-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-primary);
    font-weight: 600;
}

.featured-title {
    font-family: 'Patrick Hand', cursive;
    font-size: 1.8rem;
    color: var(--color-grey-900);
    margin: 8px 0 12px;
    line-height: 1.2;
}

.featured-desc {
    font-size: 0.85rem;
    color: var(--color-grey-600);
    line-height: 1.5;
    margin-bottom: 16px;
    flex: 1;
}

.featured-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-primary);
    font-weight: 500;
    text-decoration: none;
    font-size: 0.9rem;
}

.featured-link:hover {
    text-decoration: underline;
}

/* Mobile Navigation */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.hamburger-icon {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.hamburger-icon span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-grey-800);
    transition: all var(--transition-fast);
}

.mobile-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background-color: var(--color-white);
    box-shadow: var(--shadow-xl);
    z-index: 1001;
    transition: right var(--transition-normal);
    padding: var(--spacing-lg);
}

.mobile-nav.active {
    right: 0;
}

.mobile-nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.mobile-nav-close {
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--color-grey-600);
}

.mobile-nav-links {
    list-style: none;
}

.mobile-nav-links li {
    margin-bottom: var(--spacing-md);
}

.mobile-nav-links a {
    display: block;
    padding: var(--spacing-sm) 0;
    font-size: 1.125rem;
    color: var(--color-grey-700);
}

.mobile-nav-links a:hover,
.mobile-nav-links a.active {
    color: var(--color-primary);
}

.mobile-nav-links .btn {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-lg);
    display: inline-block;
    text-align: center;
}

.mobile-nav-links .mobile-nav-cta {
    color: var(--color-white);
}

.mobile-nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.mobile-nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ============================================
   FOOTER
   ============================================ */

.site-footer {
    background-color: var(--color-grey-900);
    color: var(--color-grey-300);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
    margin-top: auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand {
    grid-column: span 1;
}

.footer-logo {
    display: inline-block;
    margin-bottom: var(--spacing-md);
}

.footer-logo-img {
    height: 40px;
    width: auto;
}

.footer-logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-white);
}

.footer-slogan {
    color: var(--color-grey-400);
}

.footer-heading {
    color: var(--color-white);
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--color-grey-400);
    transition: color var(--transition-fast);
}

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

.footer-contact {
    list-style: none;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.footer-contact .icon {
    color: var(--color-primary);
    flex-shrink: 0;
}

.footer-contact a {
    color: var(--color-grey-400);
}

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

.footer-hours {
    margin-top: var(--spacing-lg);
}

.footer-hours h5 {
    color: var(--color-white);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
}

.footer-hours p {
    font-size: 0.875rem;
    margin-bottom: var(--spacing-xs);
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.footer-social a {
    color: var(--color-grey-400);
    transition: color var(--transition-fast);
}

.footer-social a:hover {
    color: var(--color-primary);
}

/* Footer Newsletter */
.footer-newsletter {
    border-top: 1px solid var(--color-grey-800);
    border-bottom: 1px solid var(--color-grey-800);
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-lg);
}

.footer-newsletter-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
}

.footer-newsletter-text h4 {
    color: var(--color-white);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.footer-newsletter-text p {
    color: var(--color-grey-400);
    margin: 0;
    font-size: 0.9375rem;
}

.footer-newsletter-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: flex-start;
}

.footer-newsletter-form input {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-grey-700);
    border-radius: var(--radius-md);
    background: var(--color-grey-800);
    color: var(--color-white);
    font-size: 1rem;
    width: 280px;
}

.footer-newsletter-form input::placeholder {
    color: var(--color-grey-500);
}

.footer-newsletter-form input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.newsletter-input-group {
    display: flex;
    gap: var(--spacing-sm);
}

.newsletter-recaptcha {
    margin-top: var(--spacing-sm);
}

.newsletter-recaptcha-small {
    margin: var(--spacing-sm) 0;
}

.newsletter-recaptcha .g-recaptcha,
.newsletter-recaptcha-small .g-recaptcha {
    transform: scale(0.85);
    transform-origin: left top;
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-legal {
    display: flex;
    gap: var(--spacing-md);
}

.footer-legal a {
    color: var(--color-grey-400);
    font-size: 0.875rem;
}

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

.footer-legal .separator {
    color: var(--color-grey-600);
}

.footer-copyright {
    font-size: 0.875rem;
    color: var(--color-grey-500);
}

/* ============================================
   WHATSAPP FLOAT BUTTON
   ============================================ */

.whatsapp-float {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 60px;
    height: 60px;
    background-color: #25D366;
    color: var(--color-white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    z-index: 999;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-xl);
    color: var(--color-white);
}

/* ============================================
   ALERTS
   ============================================ */

.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.alert-error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

/* ============================================
   FORMS
   ============================================ */

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--color-grey-700);
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-body);
    font-size: 1rem;
    border: 1px solid var(--color-grey-300);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(45, 80, 22, 0.1);
}

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

/* ============================================
   CARDS
   ============================================ */

.card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.card-body {
    padding: var(--spacing-lg);
}

.card-title {
    margin-bottom: var(--spacing-sm);
}

.card-text {
    color: var(--color-grey-600);
    margin-bottom: var(--spacing-md);
}

/* ============================================
   RESPONSIVE
   ============================================ */

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

@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.375rem; }

    .navbar-nav,
    .navbar-cta {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .footer-newsletter-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-newsletter-form {
        flex-direction: column;
        width: 100%;
    }

    .footer-newsletter-form input {
        width: 100%;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .whatsapp-float {
        bottom: var(--spacing-md);
        right: var(--spacing-md);
        width: 50px;
        height: 50px;
    }
}

/* ============================================
   UTILITIES
   ============================================ */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }
.mt-5 { margin-top: var(--spacing-2xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }
.mb-5 { margin-bottom: var(--spacing-2xl); }

.py-1 { padding-top: var(--spacing-sm); padding-bottom: var(--spacing-sm); }
.py-2 { padding-top: var(--spacing-md); padding-bottom: var(--spacing-md); }
.py-3 { padding-top: var(--spacing-lg); padding-bottom: var(--spacing-lg); }
.py-4 { padding-top: var(--spacing-xl); padding-bottom: var(--spacing-xl); }
.py-5 { padding-top: var(--spacing-2xl); padding-bottom: var(--spacing-2xl); }

.section {
    padding: var(--spacing-3xl) 0;
}

.section-grey {
    background-color: var(--color-grey-50);
}

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

.section-primary h2,
.section-primary h3 {
    color: var(--color-white);
}