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

:root {
    /* Color Palette - Professional Blue/Green Energy Theme */
    --primary-blue: #2563eb;
    --primary-blue-dark: #1e40af;
    --secondary-green: #059669;
    --secondary-green-dark: #047857;
    --accent-teal: #0891b2;

    --dark-bg: #0f172a;
    --dark-gray: #1e293b;
    --medium-gray: #475569;
    --light-gray: #e2e8f0;
    --white: #ffffff;
    --text-dark: #1e293b;
    --text-light: #64748b;

    /* Spacing */
    --section-padding: 5rem 2rem;
    --container-max-width: 1200px;

    /* Transitions */
    --transition-smooth: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===================================
   Navigation
   =================================== */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: var(--transition-smooth);
}

.nav-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    flex-shrink: 0;
}

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

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

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 1rem;
    transition: var(--transition-smooth);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-blue), var(--secondary-green));
    transition: width 0.3s ease;
}

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

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

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

/* ===================================
   Hero Section
   =================================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 6rem 2rem 4rem;
    background: linear-gradient(135deg, #0f172a 0%, #1e40af 50%, #059669 100%);
    color: var(--white);
    position: relative;
}

.hero-content {
    max-width: 900px;
    z-index: 1;
}

.hero-logo {
    margin-bottom: 2rem;
}

.main-logo {
    max-width: 600px;
    width: 100%;
    height: auto;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.3));
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.8;
    margin-bottom: 2.5rem;
    color: rgba(255, 255, 255, 0.95);
    font-weight: 300;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: var(--secondary-green);
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 15px rgba(5, 150, 105, 0.4);
}

.cta-button:hover {
    background-color: var(--secondary-green-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(5, 150, 105, 0.5);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-left: 2px solid rgba(255, 255, 255, 0.8);
    border-bottom: 2px solid rgba(255, 255, 255, 0.8);
    transform: rotate(-45deg);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: rotate(-45deg) translateY(0);
    }
    40% {
        transform: rotate(-45deg) translateY(-10px);
    }
    60% {
        transform: rotate(-45deg) translateY(-5px);
    }
}

/* ===================================
   Section Styles
   =================================== */
section {
    padding: var(--section-padding);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-dark);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--secondary-green));
    margin: 1rem auto 0;
    border-radius: 2px;
}

/* ===================================
   Mission Section
   =================================== */
.mission-section {
    background-color: var(--white);
}

.mission-text {
    font-size: 1.25rem;
    line-height: 1.8;
    text-align: center;
    max-width: 800px;
    margin: 0 auto 3rem;
    color: var(--text-dark);
}

.mission-values {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.value-card {
    text-align: center;
    padding: 2rem;
    border-radius: 12px;
    background-color: var(--light-gray);
    transition: var(--transition-smooth);
}

.value-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

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

.value-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--primary-blue);
}

.value-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* ===================================
   Expertise Section
   =================================== */
.expertise-section {
    background: linear-gradient(135deg, #f8fafc 0%, #e0f2fe 100%);
}

.expertise-intro {
    text-align: center;
    font-size: 1.25rem;
    color: var(--text-dark);
    margin-bottom: 3rem;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.expertise-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: var(--transition-smooth);
    border-left: 4px solid var(--primary-blue);
}

.expertise-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
    border-left-color: var(--secondary-green);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.card-icon {
    font-size: 2.5rem;
}

.expertise-card h3 {
    font-size: 1.25rem;
    color: var(--text-dark);
}

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

.platform-highlight {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-green));
    color: var(--white);
    padding: 3rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(37, 99, 235, 0.3);
}

.platform-content h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.platform-content p {
    font-size: 1.15rem;
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto;
}

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

.contact-intro {
    text-align: center;
    font-size: 1.15rem;
    max-width: 800px;
    margin: 0 auto 3rem;
    color: var(--text-dark);
    line-height: 1.8;
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    align-items: start;
}

.contact-info h3 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    color: var(--primary-blue);
}

.contact-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    align-items: flex-start;
}

.contact-icon {
    font-size: 1.5rem;
    margin-top: 0.25rem;
}

.contact-item strong {
    display: block;
    color: var(--text-dark);
    margin-bottom: 0.25rem;
    font-size: 1.1rem;
}

.contact-item p {
    color: var(--text-light);
}

.contact-item a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: var(--transition-smooth);
}

.contact-item a:hover {
    color: var(--secondary-green);
}

.contact-categories {
    margin-top: 2rem;
    padding: 1.5rem;
    background-color: var(--light-gray);
    border-radius: 8px;
}

.contact-categories h4 {
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.contact-categories ul {
    list-style: none;
}

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

.contact-categories li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary-green);
    font-weight: bold;
}

/* ===================================
   Contact Form
   =================================== */
.contact-form-container {
    background-color: var(--light-gray);
    padding: 2.5rem;
    border-radius: 12px;
}

.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: 0.875rem;
    border: 2px solid #cbd5e1;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition-smooth);
    background-color: var(--white);
}

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

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

.submit-button {
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-green));
    color: var(--white);
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.submit-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.submit-button:active {
    transform: translateY(0);
}

.form-status {
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    display: none;
}

.form-status.success {
    background-color: #d1fae5;
    color: #047857;
    display: block;
}

.form-status.error {
    background-color: #fee2e2;
    color: #dc2626;
    display: block;
}

/* ===================================
   Footer
   =================================== */
.footer {
    background-color: var(--dark-bg);
    color: var(--white);
    padding: 3rem 2rem;
    text-align: center;
}

.footer-content {
    max-width: var(--container-max-width);
    margin: 0 auto;
}

.footer-logo img {
    max-width: 300px;
    height: auto;
    margin-bottom: 1rem;
    filter: brightness(0) invert(1);
}

.footer-text {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

/* ===================================
   Responsive Design - Tablet
   =================================== */
@media (max-width: 768px) {
    :root {
        --section-padding: 3rem 1.5rem;
    }

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

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--white);
        flex-direction: column;
        gap: 0;
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    }

    .nav-menu.active {
        max-height: 300px;
    }

    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid var(--light-gray);
    }

    .nav-link {
        display: block;
        padding: 1rem 2rem;
    }

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

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

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .main-logo {
        max-width: 400px;
    }

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

    .mission-text {
        font-size: 1.1rem;
    }

    .expertise-intro {
        font-size: 1.1rem;
    }

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

/* ===================================
   Responsive Design - Mobile
   =================================== */
@media (max-width: 480px) {
    .nav-container {
        padding: 1rem;
    }

    .nav-logo {
        height: 30px;
    }

    .hero-section {
        padding: 5rem 1rem 3rem;
    }

    .main-logo {
        max-width: 280px;
    }

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

    .hero-subtitle {
        font-size: 1rem;
    }

    .cta-button {
        padding: 0.875rem 2rem;
        font-size: 1rem;
    }

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

    .mission-values {
        grid-template-columns: 1fr;
    }

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

    .platform-highlight {
        padding: 2rem 1.5rem;
    }

    .platform-content h3 {
        font-size: 1.5rem;
    }

    .platform-content p {
        font-size: 1rem;
    }

    .contact-form-container {
        padding: 1.5rem;
    }

    .footer-logo img {
        max-width: 200px;
    }
}

/* ===================================
   Print Styles
   =================================== */
@media print {
    .nav-menu,
    .scroll-indicator,
    .mobile-menu-toggle {
        display: none;
    }

    .hero-section {
        background: var(--white);
        color: var(--text-dark);
        min-height: auto;
    }
}