/* ===========================
   CSS Variables & Reset
   =========================== */
:root {
    --primary-blue: #2563eb;
    --primary-blue-dark: #1d4ed8;
    --primary-blue-light: #3b82f6;
    --bg-dark: #0f172a;
    --bg-dark-secondary: #1e293b;
    --bg-dark-tertiary: #334155;
    --text-white: #ffffff;
    --text-gray: #cbd5e1;
    --text-gray-dark: #94a3b8;
    --accent-gradient: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.3);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===========================
   Navigation
   =========================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 0;
    z-index: 1000;
    transition: var(--transition);
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-white);
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--primary-blue);
}

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

.nav-link {
    color: var(--text-gray);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-blue);
    transition: var(--transition);
}

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

.btn-nav {
    padding: 0.5rem 1.25rem;
    background: var(--primary-blue);
    color: var(--text-white);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-nav:hover {
    background: var(--primary-blue-dark);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

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

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

/* ===========================
   Hero Section
   =========================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    z-index: -1;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    animation: pulse 8s ease-in-out infinite;
}

.hero-background::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: pulse 10s ease-in-out infinite reverse;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 0.5;
    }

    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-gray);
    margin-bottom: 2rem;
    line-height: 1.8;
}

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

.btn {
    padding: 0.875rem 2rem;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    display: inline-block;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary-blue);
    color: var(--text-white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: var(--primary-blue-dark);
    box-shadow: var(--shadow-glow);
    transform: translateY(-3px);
}

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

.btn-secondary:hover {
    background: var(--primary-blue);
    transform: translateY(-3px);
}

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

/* Hero Visual Cards */
.hero-visual {
    position: relative;
    height: 400px;
}

.floating-card {
    position: absolute;
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 1rem;
    animation: float 6s ease-in-out infinite;
}

.floating-card .card-icon {
    font-size: 2rem;
}

.floating-card .card-text {
    font-weight: 600;
    font-size: 1.1rem;
}

.card-1 {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.card-2 {
    top: 50%;
    right: 10%;
    animation-delay: 2s;
}

.card-3 {
    bottom: 10%;
    left: 30%;
    animation-delay: 4s;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-20px);
    }
}

/* ===========================
   Section Styles
   =========================== */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-blue);
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-gray);
    line-height: 1.8;
}

/* ===========================
   About Section
   =========================== */
.about {
    padding: 6rem 0;
    background: var(--bg-dark);
}

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

.about-card {
    background: var(--bg-dark-secondary);
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.about-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-glow);
}

.about-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.about-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-white);
}

.about-card p {
    color: var(--text-gray);
    line-height: 1.8;
}

/* ===========================
   Services Section
   =========================== */
.services {
    padding: 6rem 0;
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-dark-secondary) 100%);
}

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

.service-card {
    background: var(--bg-dark-secondary);
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transition: var(--transition);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-glow);
}

.service-card.featured {
    border: 2px solid var(--primary-blue);
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, var(--bg-dark-secondary) 100%);
}

.featured-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--accent-gradient);
    color: var(--text-white);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.service-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 1.5rem;
    color: var(--primary-blue);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-white);
}

.service-card p {
    color: var(--text-gray);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.service-features {
    list-style: none;
    padding: 0;
}

.service-features li {
    color: var(--text-gray-dark);
    padding: 0.5rem 0;
    font-size: 0.95rem;
}

/* ===========================
   Newsletter Section
   =========================== */
.newsletter {
    padding: 4rem 0;
    background: var(--bg-dark-secondary);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

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

.newsletter-text p {
    color: var(--text-gray);
    font-size: 1.1rem;
}

.newsletter-form {
    max-width: 500px;
}

.form-group-inline {
    display: flex;
    gap: 1rem;
}

.form-group-inline input {
    flex: 1;
}

.form-note {
    margin-top: 0.75rem;
    font-size: 0.875rem;
    color: var(--text-gray-dark);
}

/* ===========================
   Contact Section
   =========================== */
.contact {
    padding: 6rem 0;
    background: var(--bg-dark);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-form-wrapper,
.schedule-wrapper {
    background: var(--bg-dark-secondary);
    padding: 3rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.contact-form-wrapper h2,
.schedule-wrapper h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.contact-subtitle {
    color: var(--text-gray);
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-gray);
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--bg-dark);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    color: var(--text-white);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select: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;
}

.schedule-info {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-gray);
    font-size: 0.95rem;
}

.schedule-info p {
    margin-bottom: 0.5rem;
}

/* ===========================
   Footer
   =========================== */
.footer {
    background: var(--bg-dark-secondary);
    padding: 3rem 0 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand p {
    color: var(--text-gray);
    margin-top: 1rem;
    line-height: 1.8;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

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

.footer-column ul li {
    margin-bottom: 0.75rem;
}

.footer-column a {
    color: var(--text-gray);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    color: var(--text-gray-dark);
    font-size: 0.9rem;
}

/* ===========================
   Modal
   =========================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-dark-secondary);
    padding: 3rem;
    border-radius: 20px;
    text-align: center;
    max-width: 400px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-icon {
    width: 80px;
    height: 80px;
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    margin: 0 auto 1.5rem;
    color: var(--text-white);
}

.modal-content h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

.modal-content p {
    color: var(--text-gray);
    margin-bottom: 2rem;
}

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 968px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-visual {
        display: none;
    }

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

    .hero-cta {
        justify-content: center;
    }

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

    .newsletter-form {
        margin: 0 auto;
    }

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

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

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: rgba(15, 23, 42, 0.98);
        width: 100%;
        padding: 2rem;
        gap: 1.5rem;
        transition: var(--transition);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

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

    .nav-toggle {
        display: flex;
    }

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

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

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

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

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

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }

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

    .contact-form-wrapper,
    .schedule-wrapper {
        padding: 2rem;
    }

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