/* =====================================================
   vCrew Center - Presentation Website Styles
   ===================================================== */

/* CSS Variables */
:root {
    --color-primary: #0A1A2F;
    --color-primary-light: #132744;
    --color-primary-dark: #060f1c;
    --color-accent: #EAB308;
    --color-accent-light: #FCD34D;
    --color-accent-dark: #CA8A04;
    --color-blue: #1E40AF;
    --color-blue-light: #3B82F6;
    --color-white: #FFFFFF;
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;
    --color-success: #22C55E;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    --transition: all 0.3s ease;
    --border-radius: 8px;
    --border-radius-lg: 12px;
}

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

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

body {
    font-family: var(--font-family);
    color: var(--color-gray-800);
    background-color: var(--color-white);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-primary);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
}

h3 {
    font-size: clamp(1.25rem, 2vw, 1.5rem);
}

.highlight {
    color: var(--color-accent);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
}

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

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

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

.btn-secondary:hover {
    background: var(--color-white);
    color: var(--color-primary);
    transform: translateY(-2px);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(10, 26, 47, 0.95);
    backdrop-filter: blur(10px);
    padding: 15px 0;
    box-shadow: var(--shadow-lg);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo img {
    height: 120px;
    width: auto;
}

.nav-menu {
    display: flex;
    gap: 40px;
}

.nav-link {
    color: var(--color-white);
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--color-white);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 50%, var(--color-primary) 100%);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(circle at 20% 80%, rgba(234, 179, 8, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(30, 64, 175, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding: 100px 0;
}

.hero-text h1 {
    color: var(--color-white);
    margin-bottom: 10px;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--color-blue-light);
    font-weight: 500;
    margin-bottom: 20px;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--color-gray-300);
    margin-bottom: 30px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    max-width: 450px;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.3));
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-indicator span {
    display: block;
    width: 24px;
    height: 40px;
    border: 2px solid var(--color-white);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator span::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 2px;
    animation: scroll 2s ease-in-out infinite;
}

@keyframes scroll {
    0%, 100% { top: 8px; opacity: 1; }
    50% { top: 20px; opacity: 0.3; }
}

/* Section Headers */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    margin-top: 15px;
}

/* Features Section */
.features {
    padding: 100px 0;
    background: var(--color-gray-50);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--color-white);
    padding: 40px 30px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--color-gray-100);
}

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

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-icon svg {
    width: 30px;
    height: 30px;
    color: var(--color-accent);
}

.feature-card h3 {
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--color-gray-600);
    line-height: 1.7;
}

/* System Section */
.system {
    padding: 100px 0;
    background: var(--color-white);
}

.system-content {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.system-card {
    background: var(--color-gray-50);
    padding: 30px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-gray-200);
    transition: var(--transition);
}

.system-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
}

.main-card {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    border: none;
}

.main-card h3 {
    color: var(--color-white);
    font-size: 1.75rem;
    margin-bottom: 20px;
}

.main-card p {
    color: var(--color-gray-300);
    font-size: 1.1rem;
    margin-bottom: 25px;
}

.system-icon {
    width: 70px;
    height: 70px;
    background: rgba(234, 179, 8, 0.2);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
}

.system-icon svg {
    width: 35px;
    height: 35px;
    color: var(--color-accent);
}

.system-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
}

.system-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: var(--color-gray-200);
}

.system-list li::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    margin-top: 8px;
    flex-shrink: 0;
}

.system-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.system-cards-grid .system-card h4 {
    color: var(--color-primary);
    font-size: 1.1rem;
    margin-bottom: 12px;
}

.system-cards-grid .system-card p {
    color: var(--color-gray-600);
    font-size: 0.95rem;
}

/* Workflow Section */
.workflow {
    padding: 100px 0;
    background: var(--color-primary);
}

.workflow .section-header h2,
.workflow .section-header p {
    color: var(--color-white);
}

.workflow .section-header p {
    color: var(--color-gray-300);
}

.workflow-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.workflow-timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--color-accent), var(--color-blue-light));
}

.workflow-step {
    display: flex;
    gap: 30px;
    margin-bottom: 40px;
    position: relative;
}

.workflow-step:last-child {
    margin-bottom: 0;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--color-accent);
    color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
    box-shadow: 0 0 0 8px rgba(234, 179, 8, 0.2);
}

.step-content {
    background: rgba(255, 255, 255, 0.05);
    padding: 25px 30px;
    border-radius: var(--border-radius-lg);
    flex: 1;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
}

.step-content h3 {
    color: var(--color-white);
    margin-bottom: 10px;
}

.step-content p {
    color: var(--color-gray-300);
}

/* Comparison Section */
.comparison {
    padding: 100px 0;
    background: var(--color-gray-50);
}

.comparison-table-wrapper {
    overflow-x: auto;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.comparison-table th,
.comparison-table td {
    padding: 20px 25px;
    text-align: left;
    border-bottom: 1px solid var(--color-gray-100);
}

.comparison-table th {
    background: var(--color-primary);
    color: var(--color-white);
    font-weight: 600;
    font-size: 1.1rem;
}

.comparison-table th.highlight-col {
    background: var(--color-accent);
    color: var(--color-primary);
}

.comparison-table td {
    color: var(--color-gray-600);
}

.comparison-table td.highlight-col {
    background: rgba(234, 179, 8, 0.1);
    color: var(--color-primary);
    font-weight: 600;
}

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

.comparison-table tr:hover td {
    background: var(--color-gray-50);
}

.comparison-table tr:hover td.highlight-col {
    background: rgba(234, 179, 8, 0.2);
}

/* Contact Section */
.contact {
    padding: 100px 0;
    background: var(--color-white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-accent);
}

.contact-item h4 {
    font-size: 1rem;
    color: var(--color-primary);
    margin-bottom: 5px;
}

.contact-item p {
    color: var(--color-gray-600);
}

.contact-form {
    background: var(--color-gray-50);
    padding: 40px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-gray-200);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--color-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--color-white);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(234, 179, 8, 0.2);
}

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

.contact-form .btn {
    width: 100%;
}

/* Footer */
.footer {
    background: var(--color-primary);
    color: var(--color-white);
    padding: 60px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand img {
    height: 60px;
    margin-bottom: 20px;
}

.footer-brand p {
    color: var(--color-gray-400);
    max-width: 300px;
    line-height: 1.7;
}

.footer-links h4 {
    color: var(--color-white);
    font-size: 1rem;
    margin-bottom: 20px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: var(--color-gray-400);
}

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

.footer-bottom {
    padding: 25px 0;
    text-align: center;
}

.footer-bottom p {
    color: var(--color-gray-500);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .hero-description {
        margin: 0 auto 30px;
    }

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

    .hero-image img {
        max-width: 350px;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--color-primary);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 30px;
        transition: var(--transition);
        box-shadow: var(--shadow-xl);
    }

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

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

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

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

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

    .workflow-timeline::before {
        left: 25px;
    }

    .step-number {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }

    .step-content {
        padding: 20px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .comparison-table th,
    .comparison-table td {
        padding: 15px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

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

    .hero-image img {
        max-width: 280px;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .features,
    .system,
    .workflow,
    .comparison,
    .contact {
        padding: 60px 0;
    }

    .feature-card {
        padding: 30px 20px;
    }

    .contact-form {
        padding: 25px;
    }
}

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

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease forwards;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-light);
}

/* Selection Styling */
::selection {
    background: var(--color-accent);
    color: var(--color-primary);
}

/* Language Switcher */
.lang-switcher {
    margin-left: 20px;
}

.lang-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 55px;
    height: 55px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    padding: 0;
}

.lang-btn:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

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

.lang-flag {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 0.5px;
}

.lang-icon {
    width: 20px;
    height: 15px;
    display: inline-block;
    background-size: cover;
}
.lang-en {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 60 60"><rect width="60" height="30" fill="%23012169"/><path d="M0,0 L60,30 M60,0 L0,30" stroke="%23fff" stroke-width="6"/><path d="M0,0 L60,30 M60,0 L0,30" stroke="%23C8102E" stroke-width="4"/><path d="M30,0 v30 M0,15 h60" stroke="%23fff" stroke-width="10"/><path d="M30,0 v30 M0,15 h60" stroke="%23C8102E" stroke-width="6"/></svg>');
}
.lang-de {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 5 3"><rect width="5" height="3" fill="%23000"/><rect width="5" height="2" y="1" fill="%23D00"/><rect width="5" height="1" y="2" fill="%23FFCE00"/></svg>');
}

@media (max-width: 768px) {
    .lang-switcher {
        margin-left: 0;
        margin-top: 20px;
    }

    .lang-btn {
        width: 50px;
        height: 50px;
    }

    .lang-flag {
        font-size: 1rem;
    }
}