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

:root {
    /* Colors */
    --navy: #0a1628;
    --navy-light: #0f1f3d;
    --blue-accent: #4a90d9;
    --blue-hover: #5ba0e9;
    --white: #ffffff;
    --off-white: #f8f9fc;
    --gray-100: #f1f3f7;
    --gray-200: #e2e6ee;
    --gray-400: #9aa3b4;
    --gray-600: #5a6477;
    --gray-800: #2d3548;

    /* Blue accent alpha variants */
    --blue-10: rgba(74, 144, 217, 0.1);
    --blue-15: rgba(74, 144, 217, 0.15);
    --blue-25: rgba(74, 144, 217, 0.25);
    --blue-30: rgba(74, 144, 217, 0.3);

    /* Navy alpha variants */
    --navy-95: rgba(10, 22, 40, 0.95);
    --navy-85: rgba(10, 22, 40, 0.85);

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(10, 22, 40, 0.08);
    --shadow-md: 0 4px 1rem rgba(10, 22, 40, 0.1);
    --shadow-lg: 0 0.5rem 2rem rgba(10, 22, 40, 0.12);
    --shadow-xl: 0 1rem 3rem rgba(10, 22, 40, 0.16);

    /* Border radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;

    /* Spacing scale */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 5rem;
    --space-4xl: 6.25rem;

    /* Page padding (responsive, overridden in media queries) */
    --page-padding: var(--space-2xl);

    /* Font sizes (consolidated) */
    --text-sm: 0.875rem;
    --text-base: 0.9375rem;
    --text-lg: 1.05rem;
    --text-xl: 1.1rem;
    --text-2xl: 1.15rem;
    --text-3xl: 1.35rem;
    --text-4xl: 2.25rem;
    --text-5xl: 2.75rem;
    --text-hero: 5.5rem;

    /* Navbar height (responsive, overridden in media queries) */
    --nav-height: 4.5rem;

    /* Content max widths */
    --content-max: 75rem;
    --content-md: 68.75rem;
    --content-sm: 62.5rem;

    /* Shared gradient */
    --gradient-dark: linear-gradient(160deg, #060e1a 0%, var(--navy) 40%, var(--navy-light) 100%);

    /* Letter spacing */
    --tracking-tight: -0.03em;
    --tracking-snug: -0.02em;

    /* Transition */
    --transition: 0.3s ease;
}

html {
    scroll-behavior: smooth;
    height: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--white);
    color: var(--gray-800);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    min-height: 100%;
    display: flex;
    flex-direction: column;
}

a {
    text-decoration: none;
    color: inherit;
}

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

/* ===========================
   Navigation
   =========================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem var(--page-padding);
    background: var(--navy-95);
    backdrop-filter: blur(0.75rem);
    border-bottom: 1px solid var(--blue-10);
    height: var(--nav-height);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    letter-spacing: var(--tracking-snug);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 0.75rem;
    height: 100%;
    align-items: stretch;
}

.nav-links li {
    display: flex;
    align-items: stretch;
}

.nav-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 7rem;
    max-width: 7rem;
    padding: 0 var(--space-xl);
    color: var(--gray-400);
    font-size: var(--text-lg);
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

.nav-links a:hover {
    color: var(--white);
    background: var(--blue-10);
}

.nav-links a.active {
    color: var(--white);
    background: var(--blue-15);
}

.lang-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    padding: 0 0.625rem;
    height: 100%;
    background: var(--blue-15);
    color: var(--blue-accent);
    border: 1px solid var(--blue-30);
    border-radius: 0.375rem;
    font-size: var(--text-sm);
    font-weight: 700;
    font-family: inherit;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all var(--transition);
}

.lang-toggle .flag {
    font-size: var(--text-xl);
    line-height: 1;
}

.lang-toggle:hover {
    background: var(--blue-25);
    color: var(--white);
    border-color: var(--blue-accent);
}

/* ===========================
   Hero Section
   =========================== */
.hero {
    position: relative;
    min-height: 66vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-dark);
    padding: 7.5rem var(--page-padding) 2.5rem;
    overflow: hidden;
    text-align: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 50% 50%, rgba(74, 144, 217, 0.06) 0%, transparent 50%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 1; }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 45rem;
}

.hero h1 {
    font-size: var(--text-hero);
    font-weight: 800;
    color: var(--white);
    letter-spacing: var(--tracking-tight);
    margin-bottom: 0.75rem;
    animation: fadeInUp 0.8s ease-out 0.1s both;
}

.hero-tagline {
    font-size: var(--text-3xl);
    font-weight: 300;
    color: var(--blue-accent);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: var(--space-lg);
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-description {
    font-size: var(--text-xl);
    color: var(--gray-400);
    line-height: 1.8;
    margin-bottom: 2.5rem;
    animation: fadeInUp 0.8s ease-out 0.3s both;
}

.hero-buttons {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-buttons .btn {
    padding: 1.75rem 4rem 2rem;
    font-size: 1.3rem;
    border-radius: var(--radius-md);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(1.5rem);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===========================
   Buttons
   =========================== */
.btn {
    display: inline-block;
    padding: 0.875rem var(--space-xl);
    font-size: var(--text-base);
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--blue-accent);
    color: var(--white);
    box-shadow: 0 0.25rem 1rem var(--blue-30);
}

.btn-primary:hover {
    background: var(--blue-hover);
    box-shadow: 0 0.375rem 1.5rem rgba(74, 144, 217, 0.4);
    transform: translateY(-0.125rem);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    border-color: var(--blue-accent);
    color: var(--blue-accent);
    transform: translateY(-0.125rem);
}

.btn-full {
    width: 100%;
    text-align: center;
}

/* ===========================
   Section Titles
   =========================== */
.section-title {
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--navy);
    text-align: center;
    letter-spacing: var(--tracking-snug);
    margin-bottom: var(--space-sm);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--gray-600);
    text-align: center;
    margin-bottom: 3.5rem;
}

/* ===========================
   Services Section
   =========================== */
.services {
    padding: 1.875rem var(--page-padding) var(--space-4xl);
    width: 80%;
    margin: 0 auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(16.25rem, 1fr));
    gap: 1.75rem;
}

.service-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: var(--space-2xl) 1.75rem;
    transition: all var(--transition);
}

.service-card:hover {
    border-color: var(--blue-accent);
    box-shadow: var(--shadow-lg);
    transform: translateY(-0.25rem);
}

.service-icon {
    width: 3rem;
    height: 3rem;
    margin-bottom: 1.25rem;
}

.service-card h3 {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 0.625rem;
}

.service-card p {
    font-size: var(--text-base);
    color: var(--gray-600);
    line-height: 1.7;
}

/* ===========================
   Stats Section
   =========================== */
.stats {
    background: var(--off-white);
    padding: 3.5rem var(--page-padding);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(12.5rem, 1fr));
    gap: var(--space-xl);
    max-width: var(--content-sm);
    margin: 0 auto;
    text-align: center;
}

.stat-number {
    display: block;
    font-size: var(--text-5xl);
    font-weight: 800;
    color: var(--blue-accent);
    letter-spacing: var(--tracking-snug);
}

.stat-label {
    font-size: var(--text-base);
    color: var(--gray-600);
    font-weight: 500;
}

/* ===========================
   Page Header (Team & Contact)
   =========================== */
.page-header {
    background: var(--gradient-dark);
    padding: 8.75rem var(--page-padding) var(--space-3xl);
    text-align: center;
}

.page-header h1 {
    font-size: var(--text-5xl);
    font-weight: 800;
    color: var(--white);
    letter-spacing: var(--tracking-snug);
    margin-bottom: 0.75rem;
}

.page-header p {
    font-size: var(--text-xl);
    color: var(--gray-400);
}

/* ===========================
   Team Section
   =========================== */
.team-section {
    padding: var(--space-xl) var(--page-padding) var(--space-4xl);
    max-width: var(--content-max);
    margin: 0 auto;
}

.team-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-xl);
}

.team-card {
    position: relative;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition);
    flex: 0 1 20rem;
}

.team-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-0.375rem);
    border-color: var(--blue-accent);
}

.team-photo {
    aspect-ratio: 1 / 1;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.team-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    transition: filter 0.5s ease, transform 0.5s ease;
}

.team-card:hover .team-photo img {
    filter: grayscale(0%);
    transform: scale(1.05);
}

.team-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 2.5rem var(--space-lg) 1.25rem;
    background: linear-gradient(to top, var(--navy-85) 0%, rgba(10, 22, 40, 0.4) 70%, transparent 100%);
    pointer-events: none;
}

.team-info h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.25rem;
}

.team-role {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--blue-accent);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.375rem;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6), 0 0 0.5rem rgba(0, 0, 0, 0.3);
}

.team-bio {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.5;
}

/* ===========================
   Contact Section
   =========================== */
.contact-section {
    padding: 1.875rem var(--page-padding) var(--space-4xl);
    max-width: var(--content-md);
    margin: 0 auto;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--navy);
    margin-bottom: var(--space-md);
}

.contact-info > p {
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: 2.5rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
}

.contact-item {
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
}

.contact-item svg {
    width: 2rem;
    height: 2rem;
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.contact-item h4 {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 0.25rem;
}

.contact-item p {
    font-size: var(--text-xl);
    color: var(--gray-600);
    line-height: 1.6;
}

.contact-link {
    color: var(--gray-600);
    user-select: all;
    cursor: text;
    transition: color var(--transition);
}

.contact-link:hover {
    color: var(--blue-accent);
}

/* Contact Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.form-group label {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--gray-800);
}

.form-group input,
.form-group textarea {
    padding: 0.75rem var(--space-md);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-size: var(--text-base);
    font-family: inherit;
    color: var(--gray-800);
    background: var(--off-white);
    transition: all var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--blue-accent);
    background: var(--white);
    box-shadow: 0 0 0 3px var(--blue-10);
}

.form-group textarea {
    resize: vertical;
    min-height: 7.5rem;
}

.form-error {
    margin-top: 0.75rem;
    padding: 0.75rem var(--space-md);
    background: rgba(220, 53, 69, 0.1);
    border: 1px solid rgba(220, 53, 69, 0.3);
    border-radius: var(--radius-sm);
    color: #dc3545;
    font-size: var(--text-base);
    text-align: center;
}

.form-success {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2.5rem;
    gap: var(--space-md);
}

.form-success svg {
    width: 4rem;
    height: 4rem;
}

.form-success h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--navy);
}

.form-success p {
    color: var(--gray-600);
}

/* ===========================
   Footer
   =========================== */
.footer {
    margin-top: auto;
    background: var(--navy);
    padding: var(--space-2xl) var(--page-padding);
    border-top: 1px solid var(--blue-10);
}

.footer-content {
    max-width: var(--content-max);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    color: var(--white);
    font-weight: 700;
    font-size: var(--text-xl);
}

.footer-text {
    color: var(--gray-400);
    font-size: var(--text-sm);
}

.footer-links {
    display: flex;
    gap: var(--space-lg);
}

.footer-links a {
    color: var(--gray-400);
    font-size: var(--text-sm);
    font-weight: 500;
    transition: color var(--transition);
}

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

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 768px) {
    :root {
        --page-padding: var(--space-lg);
        --nav-height: 4rem;
    }

    .nav-logo span {
        display: none;
    }

    .navbar {
        justify-content: center;
    }

    .nav-links {
        gap: 0.375rem;
    }

    .nav-links a {
        padding: 0 1.125rem;
        font-size: var(--text-base);
        min-width: 5.5rem;
        max-width: 5.5rem;
    }

    .hero {
        padding-top: 6.25rem;
        padding-bottom: 3.75rem;
        min-height: auto;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

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

    .hero-description {
        font-size: var(--text-base);
    }

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

    .hero-buttons .btn {
        padding: 1.3rem 3rem 1.5rem;
        font-size: var(--text-xl);
        border-radius: var(--radius-sm);
    }

    .services {
        padding-top: 3.1875rem;
        padding-bottom: 3.75rem;
    }

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

    .stats {
        padding-top: 3.75rem;
        padding-bottom: 3.75rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .page-header {
        padding-top: 6.875rem;
        padding-bottom: 3.75rem;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .team-section {
        padding-top: var(--space-2xl);
        padding-bottom: var(--space-3xl);
    }

    .team-grid {
        max-width: 30rem;
        margin: 0 auto;
    }

    .team-card {
        flex: 1 1 100%;
    }

    .contact-section {
        padding-top: var(--space-2xl);
        padding-bottom: var(--space-3xl);
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .footer {
        padding-top: var(--space-xl);
        padding-bottom: var(--space-xl);
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    :root {
        --page-padding: var(--space-md);
        --nav-height: 3.5rem;
    }

    .nav-links a {
        padding: 0 0.75rem;
        font-size: var(--text-sm);
        min-width: 4.5rem;
        max-width: 4.5rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .team-photo {
        aspect-ratio: 1 / 1;
    }
}