/* Corporate Design System - Caventa */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* CSS Variables - Corporate Teal/Black/White */
:root {
    --teal-primary: #14b8a6;
    --teal-dark: #0f766e;
    --teal-light: #5eead4;
    --black: #000000;
    --black-soft: #1a1a1a;
    --white: #ffffff;
    --gray-light: #f5f5f5;
    --gray-medium: #e5e5e5;
    --gray-dark: #737373;
    --text-dark: #000000;
    --text-medium: #404040;
    --text-light: #737373;
    --border-color: #e5e5e5;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --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);
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --transition: all 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Header and Navigation - Corporate */
header {
    background: var(--black);
    border-bottom: 2px solid var(--teal-primary);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.logo {
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.logo-text {
    color: var(--teal-primary);
    text-decoration: none;
    display: inline-block;
    transition: var(--transition);
    font-weight: 900;
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, var(--teal-primary) 0%, var(--teal-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-text:hover {
    background: linear-gradient(135deg, var(--teal-light) 0%, var(--teal-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-center {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-links a {
    color: var(--teal-primary);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 0.5rem 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.85rem;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--teal-primary);
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--teal-light);
}

.nav-links a:hover::after {
    width: 100%;
}

/* Mobile Navigation Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1002;
    gap: 4px;
}

.mobile-menu-toggle span {
    width: 28px;
    height: 3px;
    background: var(--teal-primary);
    transition: var(--transition);
    border-radius: 2px;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

/* Dropdown Navigation */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.dropdown-toggle i {
    font-size: 0.75rem;
    transition: var(--transition);
}

.dropdown:hover .dropdown-toggle i {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 50%;
    transform: translateX(-50%) scaleY(0);
    transform-origin: top;
    opacity: 0;
    visibility: hidden;
    background: var(--black);
    border: 2px solid var(--teal-primary);
    border-radius: 12px;
    padding: 1rem 0;
    min-width: 220px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
    z-index: 1000;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    list-style: none;
    margin: 0;
}

.dropdown:hover .dropdown-menu {
    transform: translateX(-50%) scaleY(1);
    opacity: 1;
    visibility: visible;
}

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1.5rem;
    color: rgba(255,255,255,0.9);
    text-decoration: none;
    transition: all 0.2s;
    font-size: 0.9rem;
    border-left: 3px solid transparent;
}

.dropdown-menu a:hover {
    background: rgba(20, 184, 166, 0.1);
    color: var(--teal-primary);
    border-left-color: var(--teal-primary);
    padding-left: 1.75rem;
}

.dropdown-menu a i {
    width: 20px;
    text-align: center;
    color: var(--teal-primary);
}

.dropdown-divider {
    height: 1px;
    background: var(--border-color);
    margin: 0.5rem 1rem;
    border: none;
}

/* Dropdown Submenu */
.dropdown-submenu {
    position: relative;
}

.dropdown-submenu > a {
    position: relative;
}

.dropdown-submenu .submenu {
    position: absolute;
    left: 100%;
    top: 0;
    margin-left: 0.5rem;
    min-width: 220px;
    background: var(--black);
    border: 2px solid var(--teal-primary);
    border-radius: 12px;
    padding: 1rem 0;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateX(-10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1001;
    list-style: none;
    margin: 0;
}

.dropdown-submenu:hover .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.dropdown-submenu .submenu li {
    margin: 0;
}

.dropdown-submenu .submenu a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1.5rem;
    color: rgba(255,255,255,0.9);
    text-decoration: none;
    transition: all 0.2s;
    font-size: 0.9rem;
    border-left: 3px solid transparent;
}

.dropdown-submenu .submenu a:hover {
    background: rgba(20, 184, 166, 0.1);
    color: var(--teal-primary);
    border-left-color: var(--teal-primary);
    padding-left: 1.75rem;
}

/* Responsive Navigation */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-center {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--black);
        transform: translateX(-100%);
        transition: var(--transition);
        z-index: 1001;
        overflow-y: auto;
        box-shadow: var(--shadow-lg);
    }
    
    .nav-center.active {
        transform: translateX(0);
    }
    
    .nav-links {
        flex-direction: column;
        padding: 2rem;
        gap: 0;
        align-items: stretch;
    }
    
    .nav-links li {
        width: 100%;
        border-bottom: 1px solid rgba(20, 184, 166, 0.2);
    }
    
    .nav-links a {
        display: block;
        padding: 1rem 0;
        font-size: 1rem;
        text-transform: none;
        color: var(--teal-primary) !important;
    }
    
    .nav-links a:hover {
        color: var(--teal-light) !important;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: rgba(0,0,0,0.2);
        border-radius: 0;
        margin-top: 0;
        border: none;
        padding: 0;
        border-left: 3px solid var(--teal-primary);
        margin-left: 1rem;
    }
    
    .dropdown-menu li {
        border-bottom: 1px solid rgba(20, 184, 166, 0.1);
    }
    
    .dropdown-menu a {
        color: rgba(255,255,255,0.9) !important;
        border-left: none;
        padding: 0.875rem 1rem 0.875rem 2.5rem;
        font-size: 0.95rem;
    }
    
    .dropdown-menu a:hover {
        background: rgba(20, 184, 166, 0.2);
        color: var(--teal-primary) !important;
        padding-left: 2.75rem;
    }
    
    .dropdown-menu a i {
        color: var(--teal-primary);
    }
    
    .dropdown-divider {
        background: var(--border-color);
        margin: 0;
    }
    
    /* Mobile dropdown submenu */
    .dropdown-submenu .submenu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: rgba(0,0,0,0.3);
        border-radius: 0;
        margin: 0;
        margin-left: 1rem;
        border: none;
        border-left: 3px solid var(--teal-primary);
        padding: 0;
        display: none;
    }
    
    .dropdown-submenu .submenu.active {
        display: block;
    }
    
    .dropdown-submenu .submenu a {
        padding: 0.875rem 1rem 0.875rem 3rem;
        color: rgba(255,255,255,0.9) !important;
        border-left: none;
    }
    
    .dropdown-submenu .submenu a:hover {
        background: rgba(20, 184, 166, 0.2);
        color: var(--teal-primary) !important;
        padding-left: 3.25rem;
    }
    
    /* Hide dropdown menu by default on mobile */
    .dropdown-menu {
        display: none;
    }
    
    .dropdown-menu.active {
        display: block;
    }
}

/* Main Content */
main {
    margin-top: 70px;
    min-height: calc(100vh - 70px);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Hero Section - Corporate */
.hero {
    background: linear-gradient(135deg, var(--black) 0%, var(--black-soft) 100%);
    color: var(--white);
    text-align: center;
    padding: 8rem 0 6rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(20,184,166,0.1)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero > * {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.hero p {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    margin-bottom: 2.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.95;
    line-height: 1.7;
}

.cta-button {
    display: inline-block;
    background: var(--teal-primary);
    color: var(--white);
    padding: 1rem 2.5rem;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
    font-size: 1.05rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.cta-button:hover {
    background: var(--teal-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

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

.section h2 {
    text-align: center;
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
    color: var(--text-dark);
    font-weight: 800;
    letter-spacing: -0.02em;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-medium);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

/* Features Grid */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.feature:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--teal-primary);
}

.feature-icon {
    font-size: 3rem;
    color: var(--teal-primary);
    margin-bottom: 1.5rem;
}

.feature h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
    font-weight: 700;
}

.feature p {
    color: var(--text-medium);
    line-height: 1.7;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--teal-primary);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.service-card h3 {
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-weight: 700;
    font-size: 1.3rem;
}

.service-card p {
    color: var(--text-medium);
    line-height: 1.7;
}

/* Contact Form */
.contact-form {
    max-width: 700px;
    margin: 0 auto;
    background: var(--white);
    padding: 3rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
    background: var(--white);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--teal-primary);
    box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.1);
}

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

.submit-btn {
    background: var(--teal-primary);
    color: var(--white);
    padding: 1rem 2.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    width: 100%;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.submit-btn:hover {
    background: var(--teal-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Footer - Corporate */
footer {
    background: var(--black);
    color: rgba(255, 255, 255, 0.8);
    padding: 4rem 0 2rem;
    margin-top: 5rem;
    border-top: 2px solid var(--teal-primary);
}

.footer-logo {
    color: var(--white);
    font-weight: 900;
}

.footer-section h4 {
    color: var(--teal-primary);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
    display: block;
    margin-bottom: 0.75rem;
}

.footer-section a:hover {
    color: var(--teal-primary);
    padding-left: 5px;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.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; }

/* Card Styles */
.card {
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 2rem;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.card:hover {
    box-shadow: var(--shadow-lg);
}

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: var(--teal-primary);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

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

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

.btn-secondary:hover {
    background: var(--black-soft);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero {
        padding: 5rem 0 4rem;
    }
    
    .section {
        padding: 3rem 0;
    }
    
    .features,
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    nav {
        padding: 0 1rem;
    }
    
    main {
        margin-top: 70px;
    }
    
    .nav-links {
        flex-direction: column;
        gap: 0;
        width: 100%;
    }
    
    .nav-links li {
        width: 100%;
        border-bottom: 1px solid rgba(20, 184, 166, 0.2);
    }
    
    .nav-links a {
        display: block;
        padding: 1rem;
        width: 100%;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        margin: 0;
        padding: 0;
        background: rgba(0,0,0,0.2);
        border-radius: 0;
    }
    
    .dropdown-menu li {
        border-bottom: 1px solid rgba(20, 184, 166, 0.1);
    }
    
    .dropdown-menu a {
        padding: 0.875rem 1rem 0.875rem 2.5rem;
        color: rgba(255,255,255,0.9) !important;
    }
    
    .dropdown-menu a:hover {
        background: rgba(20, 184, 166, 0.2);
        color: var(--teal-primary) !important;
    }
}