/* ===================================
   Ghost-IT Corporate Solutions
   Modern Professional Stylesheet
   =================================== */

/* ===================================
   CSS Variables & Reset
   =================================== */
:root {
    --primary-color: #dc2626;
    --primary-dark: #991b1b;
    --secondary-color: #ef4444;
    --text-dark: #000000;
    --text-light: #4b5563;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #dc2626;
    --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);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--bg-white);
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

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

p {
    margin-bottom: 1rem;
    color: var(--text-light);
}

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

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

.lead {
    font-size: 1.25rem;
    font-weight: 400;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

/* ===================================
   Container & Layout
   =================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section-title {
    text-align: center;
    font-size: 2.25rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.section-subtitle {
    text-align: center;
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.section-intro {
    text-align: center;
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

/* ===================================
   Navigation
   =================================== */
.navbar {
    background-color: var(--bg-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

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

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

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    color: var(--text-dark);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    transition: var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
    background-color: rgba(37, 99, 235, 0.1);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-dark);
    margin: 3px 0;
    transition: var(--transition);
}

/* ===================================
   Buttons
   =================================== */
.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 1rem;
}

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

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

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    background: linear-gradient(135deg, #000000 0%, #dc2626 100%);
    color: white;
    padding: 6rem 0;
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: white;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===================================
   Page Header
   =================================== */
.page-header {
    background: linear-gradient(135deg, #000000 0%, #dc2626 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.page-header h1 {
    color: white;
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.page-header p {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
}

.platform-header {
    background: linear-gradient(135deg, #000000 0%, #dc2626 100%);
}

/* ===================================
   Services Overview
   =================================== */
.services-overview {
    padding: 5rem 0;
    background-color: var(--bg-light);
}

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

.service-card {
    background-color: var(--bg-white);
    padding: 2rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.service-card h3 {
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.service-card p {
    margin-bottom: 1.5rem;
}

.service-link {
    color: var(--primary-color);
    font-weight: 600;
    display: inline-block;
}

.service-link:hover {
    color: var(--primary-dark);
    transform: translateX(5px);
}

/* ===================================
   Services Detail Page
   =================================== */
.services-detail {
    padding: 4rem 0;
}

.service-section {
    margin-bottom: 4rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--border-color);
}

.service-section:last-child {
    border-bottom: none;
}

.service-section h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--primary-color);
}

.service-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.service-item {
    background-color: var(--bg-light);
    padding: 1.5rem;
    border-radius: 0.5rem;
    border-left: 4px solid var(--primary-color);
    transition: var(--transition);
}

.service-item:hover {
    background-color: white;
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.service-item h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.service-item p {
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* ===================================
   Why Choose Us
   =================================== */
.why-choose {
    padding: 5rem 0;
    background-color: var(--bg-white);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.benefit-item {
    text-align: center;
    padding: 2rem;
}

.benefit-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.benefit-item h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.benefit-item p {
    font-size: 0.95rem;
}

/* ===================================
   Platform Highlight
   =================================== */
.platform-highlight {
    padding: 5rem 0;
    background: linear-gradient(135deg, rgba(220, 38, 38, 0.05) 0%, rgba(0, 0, 0, 0.02) 100%);
}

.platform-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.platform-text h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.feature-list {
    list-style: none;
    margin: 2rem 0;
}

.feature-list li {
    padding: 0.75rem 0;
    padding-left: 1.75rem;
    position: relative;
    color: var(--text-light);
}

.feature-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: 700;
}

.platform-preview {
    background-color: white;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.preview-header {
    background-color: #f3f4f6;
    padding: 0.75rem 1rem;
    display: flex;
    gap: 0.5rem;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: #d1d5db;
}

.preview-content {
    padding: 2rem;
}

.metric-card {
    background: linear-gradient(135deg, #000000 0%, var(--primary-color) 100%);
    color: white;
    padding: 1.5rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    display: flex;
    flex-direction: column;
}

.metric-label {
    font-size: 0.875rem;
    opacity: 0.9;
    margin-bottom: 0.5rem;
}

.metric-value {
    font-size: 1.75rem;
    font-weight: 700;
}

/* ===================================
   Platform Overview & Features
   =================================== */
.platform-overview,
.platform-features,
.use-case-section,
.metrics-section,
.benefits-section,
.security-section,
.status-section {
    padding: 4rem 0;
}

.platform-overview {
    background-color: var(--bg-light);
}

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

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

.use-case-content h3 {
    font-size: 1.5rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.feature-list-detailed {
    list-style: none;
    margin: 1.5rem 0;
}

.feature-list-detailed li {
    padding: 1rem 0;
    padding-left: 2rem;
    position: relative;
    color: var(--text-light);
    border-bottom: 1px solid var(--border-color);
}

.feature-list-detailed li:last-child {
    border-bottom: none;
}

.feature-list-detailed li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.25rem;
}

.api-list,
.tech-list {
    list-style: disc;
    margin-left: 2rem;
    color: var(--text-light);
}

.api-list li,
.tech-list li {
    padding: 0.5rem 0;
}

.privacy-section {
    background-color: var(--bg-light);
    padding: 2rem;
    border-radius: 0.5rem;
    margin: 2rem 0;
}

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

.feature-card-detailed {
    background-color: var(--bg-white);
    padding: 2rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-md);
    border-top: 4px solid var(--primary-color);
}

.feature-icon-large {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card-detailed h3 {
    margin-bottom: 1rem;
}

.feature-card-detailed ul {
    list-style: none;
    margin-top: 1rem;
}

.feature-card-detailed ul li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-light);
    font-size: 0.9rem;
}

.feature-card-detailed ul li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.metric-item {
    background-color: var(--bg-light);
    padding: 2rem;
    border-radius: 0.5rem;
}

.metric-item h4 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.metric-item ul {
    list-style: none;
}

.metric-item ul li {
    padding: 0.5rem 0;
    color: var(--text-light);
    padding-left: 1.5rem;
    position: relative;
}

.metric-item ul li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success-color);
}

.benefits-grid-large {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.benefit-card {
    background-color: var(--bg-light);
    padding: 2rem;
    border-radius: 0.5rem;
    text-align: center;
}

.benefit-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.security-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.security-item {
    background-color: var(--bg-light);
    padding: 2rem;
    border-radius: 0.5rem;
}

.security-item h3 {
    margin-bottom: 1rem;
}

.status-content {
    background-color: var(--bg-light);
    padding: 2rem;
    border-radius: 0.5rem;
    max-width: 800px;
    margin: 0 auto;
}

.status-content p {
    margin-bottom: 0.75rem;
}

/* ===================================
   About Page
   =================================== */
.about-content,
.values-section {
    padding: 4rem 0;
}

.about-intro {
    max-width: 900px;
    margin: 0 auto 4rem;
    text-align: center;
}

.about-section {
    max-width: 1000px;
    margin: 0 auto 4rem;
}

.differentiators-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.differentiator-card {
    background-color: var(--bg-light);
    padding: 2rem;
    border-radius: 0.5rem;
    border-left: 4px solid var(--primary-color);
}

.differentiator-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.expertise-item {
    background-color: var(--bg-light);
    padding: 1.5rem;
    border-radius: 0.5rem;
}

.expertise-item h4 {
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.expertise-item p {
    font-size: 0.9rem;
}

.approach-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.approach-step {
    text-align: center;
    padding: 2rem;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), #000000);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1rem;
}

.industries-list {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1.5rem;
}

.industry-tag {
    background-color: var(--bg-light);
    padding: 0.75rem 1.5rem;
    border-radius: 2rem;
    font-size: 0.9rem;
    color: var(--text-dark);
    border: 1px solid var(--border-color);
}

.partners-list {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-top: 1.5rem;
    justify-content: center;
}

.partner-item {
    background-color: var(--bg-light);
    padding: 1rem 2rem;
    border-radius: 0.5rem;
    font-weight: 600;
    color: var(--text-dark);
}

.values-section {
    background-color: var(--bg-light);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.value-card {
    background-color: var(--bg-white);
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow-md);
    text-align: center;
}

.value-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* ===================================
   Contact Page
   =================================== */
.contact-content {
    padding: 4rem 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-message {
    padding: 1rem;
    border-radius: 0.375rem;
    margin-top: 1rem;
}

.form-message.success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.form-message.error {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
    border: 1px solid var(--error-color);
}

.contact-info-section h2 {
    margin-bottom: 2rem;
}

.contact-info-card {
    background-color: var(--bg-light);
    padding: 1.5rem;
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
}

.contact-info-card h3 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
}

.contact-info-card p {
    margin-bottom: 0;
    font-size: 0.95rem;
}

.services-quick-links {
    padding: 4rem 0;
    background-color: var(--bg-light);
}

.quick-links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.quick-link-card {
    background-color: var(--bg-white);
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition);
}

.quick-link-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.quick-link-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.quick-link-card h3 {
    color: var(--text-dark);
    margin-bottom: 0;
}

.faq-section {
    padding: 4rem 0;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.faq-item {
    background-color: var(--bg-light);
    padding: 1.5rem;
    border-radius: 0.5rem;
}

.faq-item h3 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.faq-item p {
    margin-bottom: 0;
    font-size: 0.9rem;
}

/* ===================================
   CTA Section
   =================================== */
.cta-section {
    padding: 5rem 0;
    background: linear-gradient(135deg, #000000 0%, var(--primary-color) 100%);
    text-align: center;
    color: white;
}

.cta-section h2 {
    color: white;
    font-size: 2.25rem;
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
}

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

.cta-section .btn-primary:hover {
    background-color: var(--bg-light);
    color: var(--primary-dark);
}

/* ===================================
   Footer
   =================================== */
.footer {
    background-color: #000000;
    color: rgba(255, 255, 255, 0.8);
    padding: 3rem 0 1.5rem;
}

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

.footer-column h4 {
    color: white;
    font-size: 1.125rem;
    margin-bottom: 1rem;
}

.footer-column p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: 0.5rem;
}

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.footer-column ul li a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 0;
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }

    .hero-title { font-size: 2rem; }
    .section-title { font-size: 1.75rem; }

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

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: var(--bg-white);
        box-shadow: var(--shadow-lg);
        padding: 1rem;
        gap: 0;
        display: none;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-menu a {
        display: block;
        width: 100%;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .hero-cta .btn-primary,
    .hero-cta .btn-secondary {
        width: 100%;
        max-width: 300px;
    }

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

    .services-grid,
    .features-grid-detailed,
    .benefits-grid,
    .differentiators-grid,
    .expertise-grid,
    .approach-steps {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    h1 { font-size: 1.75rem; }
    .hero-title { font-size: 1.75rem; }

    .service-card,
    .feature-card-detailed {
        padding: 1.5rem;
    }
}