/* Base Styles & Variables */
:root {
    --bg-color: #0b0c15;
    --card-bg: #161823;
    --text-primary: #ffffff;
    --text-secondary: #a0a3b1;
    --accent-color: #00E5FF;
    --accent-glow: rgba(0, 229, 255, 0.4);
    --secondary-accent: #7B61FF;
    --gradient-primary: linear-gradient(135deg, #00E5FF 0%, #7B61FF 100%);

    --font-family: 'Inter', system-ui, -apple-system, sans-serif;

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

    --container-width: 1200px;
    --border-radius: 12px;
}

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

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

a {
    text-decoration: none;
    color: inherit;
    transition: 0.3s;
}

ul {
    list-style: none;
}

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

/* Typography */
h1,
h2,
h3 {
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.btn--primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 15px var(--accent-glow);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--accent-glow);
}

.btn--outline {
    background: transparent;
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
}

.btn--outline:hover {
    background: var(--accent-color);
    color: #000;
}

.btn--small {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.btn--large {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

.btn--full {
    width: 100%;
}

/* Header */
.header {
    background-color: rgba(11, 12, 21, 0.9);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.header__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    font-weight: 700;
    font-size: 1.2rem;
}

.logo__icon {
    font-size: 1.5rem;
    margin-right: 0.5rem;
}

.nav {
    display: none;
}

@media (min-width: 768px) {
    .nav {
        display: flex;
        gap: var(--spacing-md);
    }
}

.nav__link:hover {
    color: var(--accent-color);
}

/* Hero Section */
.hero {
    padding-top: 140px;
    padding-bottom: var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(123, 97, 255, 0.2) 0%, rgba(0, 0, 0, 0) 70%);
    border-radius: 50%;
    z-index: -1;
}

.hero__container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

@media (min-width: 992px) {
    .hero__container {
        grid-template-columns: 1.2fr 0.8fr;
    }
}

.hero__title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

@media (min-width: 768px) {
    .hero__title {
        font-size: 3.5rem;
    }
}

.hero__subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    max-width: 600px;
}

.hero__actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.hero__badge {
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--accent-color);
}

.hero__visual {
    position: relative;
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero__visual-circle {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: linear-gradient(45deg, var(--bg-color), var(--card-bg));
    border: 2px solid var(--accent-color);
    box-shadow: 0 0 50px var(--accent-glow);
    position: relative;
    z-index: 1;
}

.hero__visual-icon {
    position: absolute;
    font-size: 5rem;
    z-index: 2;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }

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

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

/* Stats */
.stats {
    margin-bottom: var(--spacing-xl);
}

.stats__container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .stats__container {
        grid-template-columns: repeat(4, 1fr);
    }
}

.stat-card {
    background: var(--card-bg);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
}

.stat-card__value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.stat-card__label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Section Common */
.section {
    padding: var(--spacing-xl) 0;
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .grid--2 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid--3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Cards */
.card {
    background: var(--card-bg);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: 0.3s;
}

.card:hover {
    background: rgba(22, 24, 35, 0.8);
    border-color: rgba(0, 229, 255, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.card__icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.card__title {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
}

.card__text {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* CTA Sections */
.cta-section {
    background: linear-gradient(90deg, #1A1D2D 0%, #251B38 100%);
    padding: var(--spacing-lg) 0;
    margin: var(--spacing-lg) 0;
}

.cta-section--alt {
    background: linear-gradient(90deg, #251B38 0%, #1A1D2D 100%);
}

.cta-section__container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .cta-section__container {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

.cta-section__title {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    color: #fff;
}

.cta-section__text {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Program / Accordion */
.accordion {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.accordion__item {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
    cursor: default;
    position: relative;
    overflow: hidden;
}

.accordion__item:hover {
    border-color: var(--accent-color);
    transform: translateX(10px);
    background: linear-gradient(90deg, var(--card-bg) 0%, rgba(22, 24, 35, 1) 100%);
}

.accordion__header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
}

.accordion__number {
    font-size: 2rem;
    font-weight: 800;
    color: transparent;
    -webkit-text-stroke: 1px var(--accent-color);
    line-height: 1;
    opacity: 0.7;
}

.accordion__item:hover .accordion__number {
    opacity: 1;
    text-shadow: 0 0 10px var(--accent-glow);
}

.accordion__title {
    font-size: 1.2rem;
    color: #fff;
    margin-bottom: 0.5rem;
}

.accordion__content {
    color: var(--text-secondary);
    padding-left: calc(2rem + var(--spacing-md));
    /* Align with title */
    font-size: 0.95rem;
    line-height: 1.5;
}

/* Skills */
.skills-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
}

@media (min-width: 768px) {
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.skill-item {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.03);
    padding: 1rem;
    border-radius: 8px;
    transition: 0.2s;
}

.skill-item:hover {
    background: rgba(255, 255, 255, 0.07);
}

.skill-item__check {
    color: var(--accent-color);
    margin-right: 1rem;
    font-weight: bold;
    font-size: 1.2rem;
}

/* Teachers */
.teacher-card {
    text-align: center;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
}

.teacher-card__image {
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 50%;
    margin: 0 auto var(--spacing-md);
    border: 3px solid var(--accent-color);
    box-shadow: 0 0 20px var(--accent-glow);
}

.teacher-card__name {
    margin-bottom: 0.5rem;
    color: #fff;
}

.teacher-card__role {
    color: var(--accent-color);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.teacher-card__bio {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Document Section */
.document-block {
    display: flex;
    flex-direction: column;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

@media (min-width: 768px) {
    .document-block {
        flex-direction: row;
        align-items: center;
    }
}

.document-block__text {
    padding: var(--spacing-md);
    flex: 1;
}

.document-block__visual {
    flex: 1;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.document-block__image {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Form */
.footer-form {
    padding-bottom: 0;
}

.form-container {
    background: linear-gradient(135deg, #1A1D2D 0%, #161823 100%);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    max-width: 600px;
    margin: 0 auto;
    border: 1px solid rgba(123, 97, 255, 0.3);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

@media (min-width: 768px) {
    .form-container {
        padding: var(--spacing-lg);
    }
}

.form-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.form-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.form-group {
    margin-bottom: 1rem;
}

.form-input {
    width: 100%;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: #fff;
    font-size: 1rem;
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-color);
}

/* Footer */
.footer {
    background: #05060a;
    padding: var(--spacing-bg) 0;
    margin-top: var(--spacing-xl);
    padding: var(--spacing-md) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer__container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .footer__container {
        flex-direction: row;
        justify-content: space-between;
    }
}

.footer__copy {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.footer__link {
    color: var(--text-secondary);
    margin-left: var(--spacing-md);
    font-size: 0.9rem;
}

.footer__link:hover {
    color: var(--accent-color);
}