/* ========================================
   Interactive Information Systems
   Site Stylesheet
   ======================================== */

:root {
    --color-bg: #0a0a0f;
    --color-bg-alt: #12121a;
    --color-surface: #1a1a2e;
    --color-surface-hover: #222240;
    --color-border: #2a2a4a;
    --color-text: #e8e8f0;
    --color-text-muted: #9898b0;
    --color-primary: #6366f1;
    --color-primary-hover: #818cf8;
    --color-primary-glow: rgba(99, 102, 241, 0.15);
    --color-accent: #06b6d4;
    --color-accent-glow: rgba(6, 182, 212, 0.1);
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-family);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

/* ---- Navigation ---- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: 0.75rem 0;
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--color-text);
}

.brand-badge {
    width: 36px;
    height: 36px;
}

.hero-badge {
    width: 100px;
    height: 100px;
    margin: 0 auto 1.5rem;
    display: block;
}

.brand-mark {
    font-weight: 800;
    font-size: 1.25rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand-text {
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0.25rem;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--color-text-muted);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.nav-menu a:hover {
    color: var(--color-text);
    background: var(--color-primary-glow);
}

.nav-cta {
    background: var(--color-primary) !important;
    color: white !important;
    padding: 0.5rem 1.25rem !important;
}

.nav-cta:hover {
    background: var(--color-primary-hover) !important;
}

.nav-auth {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-left: 0.5rem;
}

.nav-login {
    color: var(--color-text-muted) !important;
    font-size: 0.85rem !important;
    cursor: pointer;
    padding: 0.4rem 0.75rem !important;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

.nav-login:hover {
    color: var(--color-text) !important;
    border-color: var(--color-primary) !important;
    background: var(--color-primary-glow) !important;
}

.nav-user {
    color: var(--color-accent);
    font-size: 0.85rem;
    font-weight: 500;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}

/* ---- Hero Section ---- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 6rem 2rem;
}

.hero-content {
    max-width: 800px;
    text-align: center;
    z-index: 1;
}

.anniversary-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    border-radius: 30px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(6, 182, 212, 0.15));
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: var(--color-accent);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-muted) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    color: var(--color-text-muted);
    max-width: 640px;
    margin: 0 auto 2.5rem;
    line-height: 1.7;
}

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

.hero-gradient {
    position: absolute;
    top: -50%;
    left: -20%;
    width: 140%;
    height: 200%;
    background: radial-gradient(ellipse at 30% 50%, var(--color-primary-glow) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 30%, var(--color-accent-glow) 0%, transparent 40%);
    pointer-events: none;
    animation: gradientFloat 15s ease-in-out infinite alternate;
}

@keyframes gradientFloat {
    0% { transform: translate(0, 0) rotate(0deg); }
    100% { transform: translate(-30px, 20px) rotate(2deg); }
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    background: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-glow);
}

.btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1.05rem;
}

/* ---- Sections ---- */
.section {
    padding: 6rem 2rem;
}

.section-dark {
    background: var(--color-bg-alt);
}

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

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto 3.5rem;
    font-size: 1.1rem;
}

/* ---- Services Grid ---- */
.services-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
}

.services-grid .service-card {
    flex: 0 1 calc(33.333% - 1rem);
    min-width: 300px;
}

.service-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2rem;
    transition: var(--transition);
}

.service-card:hover {
    border-color: var(--color-primary);
    background: var(--color-surface-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.1);
}

.service-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-sm);
    background: var(--color-primary-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
    color: var(--color-primary);
}

.service-card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.service-card p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ---- Industries Grid ---- */
.industries-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.industry-card {
    padding: 2rem;
    border-radius: var(--radius);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.industry-card:hover {
    border-color: var(--color-accent);
    box-shadow: 0 8px 30px rgba(6, 182, 212, 0.08);
}

.industry-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--color-accent);
}

.industry-card p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* ---- Leadership ---- */
.leadership-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.leader-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2.5rem;
    text-align: center;
}

.leader-avatar {
    margin-bottom: 1.5rem;
}

.avatar-placeholder {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.5rem;
    color: white;
}

.avatar-img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--color-primary);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}

.leader-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.leader-role {
    display: block;
    color: var(--color-primary);
    font-weight: 500;
    font-size: 0.95rem;
    margin-bottom: 1.25rem;
}

.leader-card p {
    color: var(--color-text-muted);
    font-size: 0.93rem;
    line-height: 1.7;
    margin-bottom: 1rem;
    text-align: left;
}

.leader-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
    margin-top: 1.5rem;
    margin-bottom: 1.5rem;
}

.leader-linkedin {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.leader-linkedin:hover {
    color: #0a66c2;
    border-color: #0a66c2;
    background: rgba(10, 102, 194, 0.1);
}

.skill-tag {
    padding: 0.3rem 0.75rem;
    border-radius: 20px;
    background: var(--color-primary-glow);
    color: var(--color-primary-hover);
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

/* ---- Technology Grid ---- */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.tech-category {
    padding: 1.5rem;
    border-radius: var(--radius);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
}

.tech-category h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-accent);
}

.tech-category ul {
    list-style: none;
}

.tech-category li {
    padding: 0.4rem 0;
    color: var(--color-text-muted);
    font-size: 0.9rem;
    border-bottom: 1px solid rgba(42, 42, 74, 0.5);
}

.tech-category li:last-child {
    border-bottom: none;
}

/* ---- News / Articles ---- */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.news-category-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--color-border);
}

.news-article {
    display: block;
    text-decoration: none;
    padding: 1.25rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    margin-bottom: 1rem;
    transition: var(--transition);
    background: var(--color-surface);
}

.news-article:hover {
    border-color: var(--color-primary);
    background: var(--color-surface-hover);
    transform: translateY(-2px);
}

.news-article h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.news-article p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.5;
    margin-bottom: 0.5rem;
}

.news-source {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 0.4rem;
}

.news-date {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* ---- Contact ---- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    max-width: 800px;
    margin: 0 auto;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 0;
    color: var(--color-text-muted);
    font-size: 1rem;
}

.contact-item svg {
    color: var(--color-primary);
    flex-shrink: 0;
}

.contact-cta {
    text-align: center;
}

.contact-note {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-top: 1rem;
}

/* ---- Footer ---- */
.footer {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    padding: 3rem 2rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-brand p {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

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

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-bg-alt);
        flex-direction: column;
        padding: 5rem 2rem 2rem;
        gap: 0.5rem;
        transition: var(--transition);
        border-left: 1px solid var(--color-border);
    }

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

    .nav-menu a {
        padding: 0.75rem 1rem;
        font-size: 1rem;
    }

    .brand-text {
        display: none;
    }

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

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

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

    .contact-item {
        justify-content: center;
    }

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

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

@media (max-width: 480px) {
    .tech-grid {
        grid-template-columns: 1fr;
    }

    .section {
        padding: 4rem 1.5rem;
    }
}