/* ===================================
   VERTEX INTERNATIONAL TRADE
   Premium Corporate Stylesheet
   =================================== */

/* ===================================
   CSS VARIABLES - Brand Colors
   =================================== */
:root {
    /* Brand Colors */
    --color-primary: #0A1F44;
    /* Deep Strategic Blue */
    --color-secondary: #2B2E34;
    /* Carbon Grey */
    --color-accent: #BFC5CE;
    /* Silver Grey */
    --color-white: #FFFFFF;
    --color-light: #F8F9FA;
    --color-text: #2B2E34;
    --color-text-light: #6B7280;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --spacing-xxl: 8rem;

    /* Transitions */
    --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease;
}

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

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

body {
    font-family: var(--font-primary);
    color: var(--color-text);
    line-height: 1.7;
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

/* ===================================
   TYPOGRAPHY
   =================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
    margin-bottom: var(--spacing-sm);
    font-size: 1.125rem;
    color: var(--color-text-light);
    line-height: 1.8;
}

/* ===================================
   LAYOUT CONTAINERS
   =================================== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xxl) 0;
    position: relative;
}

/* ===================================
   LANGUAGE SELECTOR
   =================================== */
.language-selector {
    position: fixed;
    top: 30px;
    right: 30px;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.95);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    box-shadow: 0 4px 20px rgba(10, 31, 68, 0.1);
    backdrop-filter: blur(10px);
}

.lang-btn {
    background: none;
    border: none;
    color: var(--color-text-light);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    transition: var(--transition-base);
    letter-spacing: 0.05em;
}

.lang-btn.active {
    color: var(--color-primary);
}

.lang-btn:hover {
    color: var(--color-primary);
}

.lang-separator {
    color: var(--color-accent);
    font-weight: 300;
}

/* ===================================
   NAVIGATION
   =================================== */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    z-index: 999;
    padding: 1.5rem 0;
    box-shadow: 0 2px 20px rgba(10, 31, 68, 0.05);
    transition: var(--transition-base);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-symbol svg {
    width: 40px;
    height: 40px;
}

.logo-text {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.logo-main {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.05em;
}

.logo-sub {
    font-size: 0.625rem;
    font-weight: 400;
    color: var(--color-text-light);
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text);
    position: relative;
    transition: var(--transition-base);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition-base);
}

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

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

.nav-link.cta-nav {
    background: var(--color-primary);
    color: var(--color-white);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
}

.nav-link.cta-nav::after {
    display: none;
}

.nav-link.cta-nav:hover {
    background: var(--color-secondary);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(10, 31, 68, 0.2);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-primary);
    cursor: pointer;
}

/* ===================================
   BUTTONS
   =================================== */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition-base);
    text-align: center;
    letter-spacing: 0.02em;
}

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

.btn-primary:hover {
    background: var(--color-secondary);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(10, 31, 68, 0.3);
}

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

.btn-secondary:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(10, 31, 68, 0.2);
}

/* ===================================
   HERO SECTION
   =================================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    background: linear-gradient(135deg, #F8F9FA 0%, #FFFFFF 100%);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(135deg, rgba(10, 31, 68, 0.02) 0%, rgba(191, 197, 206, 0.05) 100%);
    z-index: 0;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    animation: fadeInUp 0.8s ease-out;
}

.hero-title {
    margin-bottom: var(--spacing-md);
    line-height: 1.15;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeIn 1s ease-out 0.3s both;
}

.vertex-animation {
    position: relative;
}

/* SVG Animations */
.line-anim {
    stroke-dasharray: 500;
    stroke-dashoffset: 500;
    animation: drawLine 2s ease-out forwards;
}

.line-1 {
    animation-delay: 0.2s;
}

.line-2 {
    animation-delay: 0.4s;
}

.line-3 {
    animation-delay: 0.6s;
}

.line-4 {
    animation-delay: 0.8s;
}

.vertex-point {
    opacity: 0;
    animation: fadeIn 0.5s ease-out 1.2s forwards;
}

.pulse-circle {
    opacity: 0;
    animation: pulse 2s ease-out 1.5s infinite;
}

@keyframes drawLine {
    to {
        stroke-dashoffset: 0;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0% {
        opacity: 0.3;
        transform: scale(1);
    }

    50% {
        opacity: 0.1;
        transform: scale(1.5);
    }

    100% {
        opacity: 0;
        transform: scale(2);
    }
}

/* ===================================
   PAGE HERO (For Subpages)
   =================================== */
.page-hero {
    height: 40vh;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--color-white);
    position: relative;
    padding-top: 100px;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.page-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(rgba(10, 31, 68, 0.8), rgba(10, 31, 68, 0.6));
    z-index: 1;
}

.page-hero .container {
    position: relative;
    z-index: 2;
}

.page-hero-title {
    color: var(--color-white);
    margin-bottom: 0;
    font-size: clamp(2.5rem, 6vw, 4rem);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Specific Page Heroes */
.about-hero {
    background-image: url('../assets/about-hero.png');
}

.services-hero {
    background-image: url('../assets/services-hero.png');
}

.contact-hero {
    background-image: url('../assets/contact-hero.png');
}

.why-hero {
    background-image: url('../assets/why-hero.png');
}

.client-hero {
    background-image: url('../assets/client-hero.png');
}

/* ===================================
   MISSION SECTION
   =================================== */
.mission-section {
    background: var(--color-primary);
    color: var(--color-white);
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.mission-content {
    max-width: 900px;
    margin: 0 auto;
}

.mission-title {
    color: var(--color-white);
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-md);
}

.mission-text {
    font-size: 1.375rem;
    color: var(--color-accent);
    line-height: 1.8;
}

/* ===================================
   PILLARS SECTION
   =================================== */
.pillars-section {
    background: var(--color-light);
}

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

.section-subtitle {
    text-align: center;
    font-size: 1.25rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

.pillar-card {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: 8px;
    text-align: center;
    transition: var(--transition-base);
    box-shadow: 0 4px 20px rgba(10, 31, 68, 0.05);
}

.pillar-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(10, 31, 68, 0.15);
}

.pillar-icon {
    margin-bottom: var(--spacing-md);
    display: flex;
    justify-content: center;
}

.pillar-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.pillar-text {
    font-size: 1.125rem;
    color: var(--color-text-light);
}

/* ===================================
   ABOUT SECTION
   =================================== */
.about-section {
    background: var(--color-white);
}

.about-content {
    max-width: 1000px;
    margin: 0 auto;
}

.about-text p {
    font-size: 1.125rem;
    line-height: 2;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

/* ===================================
   SERVICES SECTION
   =================================== */
.services-section {
    background: var(--color-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.service-card {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: 8px;
    border-left: 4px solid var(--color-primary);
    transition: var(--transition-base);
    box-shadow: 0 4px 20px rgba(10, 31, 68, 0.05);
}

.service-card:hover {
    transform: translateX(5px);
    box-shadow: 0 10px 40px rgba(10, 31, 68, 0.15);
}

.service-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
    opacity: 0.5;
}

.service-title {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.service-problem,
.service-benefit,
.service-result {
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.service-problem strong,
.service-benefit strong,
.service-result strong {
    color: var(--color-primary);
    font-weight: 600;
}

/* ===================================
   IDEAL CLIENT SECTION
   =================================== */
.client-section {
    background: var(--color-white);
}

.client-content {
    max-width: 1000px;
    margin: 0 auto;
}

.client-mindset {
    margin-bottom: var(--spacing-xl);
}

.client-mindset h3 {
    font-size: 1.75rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.mindset-list {
    list-style: none;
    padding: 0;
}

.mindset-list li {
    font-size: 1.25rem;
    color: var(--color-text);
    padding: var(--spacing-sm) 0 var(--spacing-sm) var(--spacing-lg);
    position: relative;
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

.mindset-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-size: 1.5rem;
    font-weight: 700;
}

.client-callout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.callout-not,
.callout-for {
    padding: var(--spacing-lg);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(10, 31, 68, 0.05);
}

.callout-not {
    background: #FEF2F2;
    border-left: 4px solid #DC2626;
}

.callout-for {
    background: #F0FDF4;
    border-left: 4px solid #16A34A;
}

.callout-not h4 {
    color: #DC2626;
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.callout-for h4 {
    color: #16A34A;
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.callout-not p,
.callout-for p {
    font-size: 1.125rem;
    line-height: 1.8;
}

/* ===================================
   WHY VERTEX SECTION
   =================================== */
.why-section {
    background: var(--color-light);
}

.comparison-table {
    max-width: 900px;
    margin: var(--spacing-xl) auto 0;
    background: var(--color-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(10, 31, 68, 0.1);
}

.comparison-header {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    background: var(--color-primary);
    color: var(--color-white);
    font-weight: 600;
    font-size: 1.125rem;
    padding: var(--spacing-md);
    text-align: center;
}

.comparison-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    border-bottom: 1px solid var(--color-accent);
    padding: var(--spacing-md);
    align-items: center;
}

.comparison-row:last-child {
    border-bottom: none;
}

.comparison-label {
    font-weight: 600;
    color: var(--color-primary);
    font-size: 1.125rem;
}

.comparison-value {
    text-align: center;
    font-size: 1.125rem;
    color: var(--color-text-light);
}

.comparison-value.comparison-vertex {
    color: var(--color-primary);
    font-weight: 600;
    background: rgba(10, 31, 68, 0.05);
    padding: var(--spacing-sm);
    border-radius: 4px;
}

.comparison-col.comparison-vertex {
    background: rgba(255, 255, 255, 0.1);
}

/* ===================================
   CONTACT SECTION
   =================================== */
.contact-section {
    background: var(--color-white);
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
}

.contact-intro {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.contact-text {
    font-size: 1.25rem;
    color: var(--color-text-light);
}

.contact-form {
    background: var(--color-light);
    padding: var(--spacing-lg);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(10, 31, 68, 0.05);
}

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

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

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
    font-size: 0.9375rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--color-accent);
    border-radius: 8px;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition-base);
    background: var(--color-white);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(10, 31, 68, 0.1);
}

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

.contact-form .btn {
    width: 100%;
    margin-top: var(--spacing-sm);
}

.form-message {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    border-radius: 8px;
    text-align: center;
    font-weight: 600;
    display: none;
}

.form-message.success {
    display: block;
    background: #F0FDF4;
    color: #16A34A;
    border: 2px solid #16A34A;
}

.form-message.error {
    display: block;
    background: #FEF2F2;
    color: #DC2626;
    border: 2px solid #DC2626;
}

/* ===================================
   FOOTER
   =================================== */
.main-footer {
    background: var(--color-secondary);
    color: var(--color-accent);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-brand .logo-text .logo-main {
    color: var(--color-white);
}

.footer-tagline {
    font-size: 1.125rem;
    font-style: italic;
    color: var(--color-accent);
    text-align: center;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(191, 197, 206, 0.2);
}

.footer-bottom p {
    color: var(--color-accent);
    font-size: 0.875rem;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-visual {
        order: -1;
    }

    .hero-visual svg {
        max-width: 400px;
    }

    .hero-cta {
        justify-content: center;
    }

    .nav-menu {
        gap: 1.5rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .client-callout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-xl: 4rem;
        --spacing-xxl: 5rem;
    }

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

    .language-selector {
        top: 20px;
        right: 20px;
    }

    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        flex-direction: column;
        background: var(--color-white);
        width: 100%;
        padding: var(--spacing-lg);
        box-shadow: 0 10px 30px rgba(10, 31, 68, 0.1);
        transition: var(--transition-base);
        gap: 1rem;
    }

    .nav-menu.active {
        left: 0;
    }

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

    .pillars-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .comparison-header,
    .comparison-row {
        font-size: 0.875rem;
    }

    .comparison-label {
        font-size: 1rem;
    }

    .hero-visual svg {
        max-width: 300px;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-cta .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    p {
        font-size: 1rem;
    }

    .comparison-header,
    .comparison-row {
        grid-template-columns: 1fr;
        text-align: left;
    }

    .comparison-value {
        text-align: left;
        padding: var(--spacing-xs) 0;
    }

    .comparison-header .comparison-col:first-child {
        display: none;
    }

    .comparison-label {
        background: var(--color-light);
        padding: var(--spacing-xs);
        margin-bottom: var(--spacing-xs);
        border-radius: 4px;
    }
}