/* ========================================
   GLOBAL STYLES & RESET
   ======================================== */

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

:root {
    /* Color Palette */
    --primary-blue: #1e3a8a;
    --dark-blue: #0f172a;
    --light-blue: #3b82f6;
    --accent-red: #ef4444;
    --accent-red-hover: #dc2626;
    --white: #ffffff;
    --light-gray: #f8fafc;
    --medium-gray: #64748b;
    --dark-gray: #334155;
    --text-dark: #0f172a;

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;

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

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

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

/* ========================================
   TYPOGRAPHY
   ======================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

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

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

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

p {
    margin-bottom: var(--spacing-sm);
}

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

/* ========================================
   UTILITY CLASSES
   ======================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.section-label {
    display: inline-block;
    color: var(--accent-red);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    color: var(--dark-blue);
    margin-bottom: var(--spacing-md);
}

/* ========================================
   BUTTONS
   ======================================== */

.btn-primary {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: var(--accent-red);
    color: var(--white);
    border: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition-medium);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    background-color: var(--accent-red-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.15);
}

/* ========================================
   NAVIGATION
   ======================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: var(--transition-medium);
}

.navbar.scrolled {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.nav-brand a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    letter-spacing: 2px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    color: var(--white);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: var(--transition-fast);
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.nav-link.cta-button {
    background-color: var(--accent-red);
    color: var(--white);
}

.nav-link.cta-button:hover {
    background-color: var(--accent-red-hover);
}

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

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--white);
    margin: 3px 0;
    transition: var(--transition-fast);
    border-radius: 2px;
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
    position: relative;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--dark-blue) 0%, var(--primary-blue) 100%);
    color: var(--white);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at top right, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
    margin-top: var(--spacing-lg);
}

.hero-text {
    animation: fadeInLeft 1s ease;
}

.hero-title {
    color: var(--white);
    margin-bottom: var(--spacing-sm);
    font-size: clamp(3rem, 6vw, 4.5rem);
}

.hero-subtitle {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.hero-description {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.hero-image {
    position: relative;
    animation: fadeInRight 1s ease;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    object-fit: cover;
    max-height: 600px;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
}

.scroll-indicator span {
    display: block;
    width: 30px;
    height: 50px;
    border: 2px solid var(--white);
    border-radius: 20px;
    position: relative;
}

.scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 10px;
    background-color: var(--white);
    border-radius: 3px;
    animation: scroll 2s infinite;
}

/* ========================================
   ABOUT SECTION
   ======================================== */

.about {
    padding: var(--spacing-xl) 0;
    background-color: var(--light-gray);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-lg);
    align-items: start;
}

.about-image {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.about-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition-slow);
}

.about-image:hover img {
    transform: scale(1.05);
}

.about-text p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-md);
}

.about-values {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.value-item {
    background-color: var(--white);
    padding: var(--spacing-md);
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: var(--transition-medium);
}

.value-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.value-item h3 {
    color: var(--primary-blue);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.value-item p {
    font-size: 0.95rem;
    color: var(--medium-gray);
    margin-bottom: 0;
}

/* ========================================
   COMPETENCIES SECTION
   ======================================== */

.competencies {
    padding: var(--spacing-xl) 0;
    background-color: var(--white);
}

.competencies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

.competency-card {
    background-color: var(--light-gray);
    padding: var(--spacing-md);
    border-radius: 12px;
    transition: var(--transition-medium);
    border: 2px solid transparent;
}

.competency-card:hover {
    border-color: var(--primary-blue);
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(30, 58, 138, 0.1);
}

.competency-icon {
    width: 60px;
    height: 60px;
    background-color: var(--primary-blue);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
    color: var(--white);
}

.competency-icon svg {
    width: 32px;
    height: 32px;
}

.competency-card h3 {
    color: var(--dark-blue);
    font-size: 1.4rem;
    margin-bottom: var(--spacing-sm);
}

.competency-card p {
    color: var(--dark-gray);
    line-height: 1.7;
    margin-bottom: 0;
}

/* ========================================
   EXPERIENCE SECTION
   ======================================== */

.experience {
    padding: var(--spacing-xl) 0;
    background-color: var(--light-gray);
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-md) 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--primary-blue), var(--light-blue));
}

.timeline-item {
    position: relative;
    padding-left: 80px;
    margin-bottom: var(--spacing-lg);
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}

.timeline-item:nth-child(1) { animation-delay: 0.1s; }
.timeline-item:nth-child(2) { animation-delay: 0.2s; }
.timeline-item:nth-child(3) { animation-delay: 0.3s; }
.timeline-item:nth-child(4) { animation-delay: 0.4s; }
.timeline-item:nth-child(5) { animation-delay: 0.5s; }

.timeline-dot {
    position: absolute;
    left: 18px;
    top: 0;
    width: 26px;
    height: 26px;
    background-color: var(--primary-blue);
    border: 4px solid var(--white);
    border-radius: 50%;
    box-shadow: 0 0 0 4px var(--light-gray);
}

.timeline-content {
    background-color: var(--white);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: var(--transition-medium);
}

.timeline-content:hover {
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    transform: translateX(5px);
}

.timeline-date {
    display: inline-block;
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.timeline-content h3 {
    color: var(--dark-blue);
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
}

.timeline-content p {
    color: var(--dark-gray);
    line-height: 1.7;
    margin-bottom: 0;
}

/* ========================================
   SERVICES SECTION
   ======================================== */

.services {
    padding: var(--spacing-xl) 0;
    background-color: var(--white);
}

.services-intro {
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
    text-align: center;
}

.services-intro p {
    font-size: 1.1rem;
    color: var(--dark-gray);
    line-height: 1.8;
}

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

.service-card {
    background: linear-gradient(135deg, var(--dark-blue) 0%, var(--primary-blue) 100%);
    color: var(--white);
    padding: var(--spacing-md);
    border-radius: 16px;
    transition: var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: var(--transition-slow);
}

.service-card:hover::before {
    opacity: 1;
    top: -100%;
    right: -100%;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(30, 58, 138, 0.3);
}

.service-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-red);
    margin-bottom: var(--spacing-sm);
    line-height: 1;
}

.service-card h3 {
    color: var(--white);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.service-card > p {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.service-features {
    list-style: none;
    margin-top: var(--spacing-md);
}

.service-features li {
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: var(--spacing-xs);
    color: rgba(255, 255, 255, 0.85);
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-red);
    font-weight: 700;
}

.services-cta {
    background-color: var(--light-gray);
    padding: var(--spacing-lg);
    border-radius: 16px;
    text-align: center;
    margin-top: var(--spacing-lg);
}

.services-cta h3 {
    color: var(--dark-blue);
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.services-cta p {
    font-size: 1.1rem;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-md);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ========================================
   CONTACT SECTION
   ======================================== */

.contact {
    padding: var(--spacing-xl) 0;
    background-color: var(--light-gray);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-lg);
}

.contact-info h3 {
    color: var(--dark-blue);
    font-size: 1.8rem;
    margin-bottom: var(--spacing-md);
}

.contact-info p {
    color: var(--dark-gray);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.contact-details {
    margin-top: var(--spacing-md);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
    background-color: var(--white);
    border-radius: 12px;
}

.contact-item svg {
    width: 32px;
    height: 32px;
    color: var(--primary-blue);
    flex-shrink: 0;
}

.contact-item h4 {
    color: var(--dark-blue);
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.contact-item p {
    color: var(--medium-gray);
    margin-bottom: 0;
}

/* ========================================
   CONTACT FORM
   ======================================== */

.contact-form {
    background-color: var(--white);
    padding: var(--spacing-md);
    border-radius: 16px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

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

.form-group label {
    display: block;
    color: var(--dark-blue);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.form-group input.error,
.form-group textarea.error {
    border-color: var(--accent-red);
}

.error-message {
    display: block;
    color: var(--accent-red);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
    min-height: 1.25rem;
}

.form-status {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    display: none;
}

.form-status.success {
    display: block;
    background-color: #d1fae5;
    color: #065f46;
}

.form-status.error {
    display: block;
    background-color: #fee2e2;
    color: #991b1b;
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
    background-color: var(--dark-blue);
    color: var(--white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

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

.footer-brand h3 {
    color: var(--white);
    margin-bottom: var(--spacing-xs);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
}

.footer h4 {
    color: var(--white);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
}

.footer ul {
    list-style: none;
}

.footer ul li {
    margin-bottom: var(--spacing-xs);
}

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

.footer ul li a:hover {
    color: var(--white);
    padding-left: 5px;
}

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

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

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes scroll {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-image {
        order: -1;
        max-width: 500px;
        margin: 0 auto;
    }

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

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

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

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        padding-left: 60px;
    }

    .timeline-dot {
        left: 8px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--dark-blue);
        width: 100%;
        text-align: center;
        transition: var(--transition-medium);
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: var(--spacing-md) 0;
    }

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

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }

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

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }

    .hero {
        padding: var(--spacing-lg) 0;
    }

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

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

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

@media (max-width: 480px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

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

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

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

/* ========================================
   ACCESSIBILITY
   ======================================== */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus states for keyboard navigation */
a:focus,
button:focus,
input:focus,
textarea:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* Reduced motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}