/* --- Variables & Reset --- */
:root {
    --bg-color: #050505;
    --bg-secondary: #0f0f0f;
    --text-main: #e0e0e0;
    --text-muted: #a0a0a0;
    --accent-primary: #00f0ff; /* Cyan Neon */
    --accent-secondary: #7000ff; /* Purple Neon */
    --accent-gradient: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    --radius: 8px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    text-transform: uppercase;
    color: #fff;
    line-height: 1.2;
}

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* --- Utilities --- */
.btn {
    display: inline-block;
    padding: 14px 28px;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    border-radius: var(--radius);
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    text-align: center;
}

.btn--primary {
    background: var(--accent-primary);
    color: #000;
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
}

.btn--primary:hover {
    background: #fff;
    box-shadow: 0 0 25px rgba(0, 240, 255, 0.6);
    transform: translateY(-2px);
}

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

.btn--outline:hover {
    background: rgba(0, 240, 255, 0.1);
    color: #fff;
    border-color: #fff;
}

.btn--small {
    padding: 10px 20px;
    font-size: 0.8rem;
}

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

.section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-lg);
    text-align: center;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--accent-gradient);
    margin: 10px auto 0;
    border-radius: 2px;
}

.badge {
    background: rgba(112, 0, 255, 0.2);
    color: var(--accent-secondary);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    border: 1px solid rgba(112, 0, 255, 0.4);
}

/* --- Animations --- */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Header --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(5, 5, 5, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding: 15px 0;
}

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

.logo {
    font-family: var(--font-heading);
    font-weight: 900;
    font-size: 1.5rem;
    color: #fff;
    letter-spacing: 1px;
}

.nav__list {
    display: none;
}

.burger {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 20px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.burger span {
    display: block;
    width: 100%;
    height: 2px;
    background: #fff;
    transition: var(--transition);
}

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

.hero__bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(112, 0, 255, 0.15) 0%, transparent 60%);
    z-index: -1;
}

.hero__content {
    text-align: center;
    max-width: 800px;
}

.hero__title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(to right, #fff, var(--text-muted));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero__subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

/* --- Concept --- */
.concept__grid {
    display: grid;
    gap: var(--spacing-lg);
}

.concept__text p {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-muted);
}

.concept__cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.card {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--accent-primary);
    font-size: 1.2rem;
}

/* --- Services --- */
.services__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.service-card {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

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

.service-card--accent {
    border-color: rgba(112, 0, 255, 0.3);
    background: linear-gradient(180deg, rgba(112, 0, 255, 0.05) 0%, var(--bg-secondary) 100%);
}

.service-card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: var(--spacing-sm);
}

.list li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 10px;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.list li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
}

/* --- Process --- */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: rgba(255, 255, 255, 0.1);
}

.timeline__item {
    position: relative;
    padding-left: 60px;
    margin-bottom: var(--spacing-md);
}

.timeline__num {
    position: absolute;
    left: 0;
    top: 0;
    width: 42px;
    height: 42px;
    background: var(--bg-color);
    border: 2px solid var(--accent-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--accent-primary);
    z-index: 2;
}

.timeline__content h3 {
    margin-bottom: 5px;
    font-size: 1.1rem;
}

.timeline__content p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* --- Cases --- */
.cases__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.case-card {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--radius);
    border-left: 4px solid var(--accent-secondary);
}

.case-card h3 {
    margin-bottom: var(--spacing-sm);
}

.case-card__desc {
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
}

.case-card__result {
    font-weight: 700;
    color: #fff;
    font-family: var(--font-heading);
}

/* --- Pricing --- */
.pricing__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.price-card {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.price-card--popular {
    border: 1px solid var(--accent-primary);
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.1);
    transform: scale(1.02);
}

.price-card__head {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-top: 10px;
}

.price-card__body {
    flex-grow: 1;
    margin-bottom: var(--spacing-md);
}

/* --- FAQ --- */
.faq__wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.faq__item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.faq__question {
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    padding: 20px 0;
    color: #fff;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq__question::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--accent-primary);
    transition: var(--transition);
}

.faq__question.active::after {
    transform: rotate(45deg);
}

.faq__answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    color: var(--text-muted);
}

.faq__answer p {
    padding-bottom: 20px;
}

/* --- Contact --- */
.contact__wrapper {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.contact__info p {
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.form {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--radius);
}

.form__group {
    position: relative;
    margin-bottom: 20px;
}

.form__input {
    width: 100%;
    padding: 12px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius);
    color: #fff;
    font-family: inherit;
    outline: none;
    transition: var(--transition);
}

.form__textarea {
    min-height: 120px;
    resize: vertical;
}

.form__input:focus {
    border-color: var(--accent-primary);
}

.form__label {
    position: absolute;
    left: 12px;
    top: 12px;
    color: var(--text-muted);
    pointer-events: none;
    transition: var(--transition);
    background: var(--bg-secondary);
    padding: 0 4px;
}

.form__input:focus ~ .form__label,
.form__input:not(:placeholder-shown) ~ .form__label {
    top: -10px;
    font-size: 0.8rem;
    color: var(--accent-primary);
}

.form__checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* --- Footer --- */
.footer {
    background: #000;
    padding: var(--spacing-lg) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: var(--text-muted);
}

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

/* --- Toast --- */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--accent-primary);
    color: #000;
    padding: 15px 25px;
    border-radius: var(--radius);
    font-weight: 600;
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition);
    z-index: 2000;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

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

    .hero__buttons {
        flex-direction: row;
    }

    .nav__list {
        display: flex;
        gap: 30px;
    }

    .burger {
        display: none;
    }

    .mobile-hidden {
        display: inline-block;
    }

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

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

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

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

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

    .footer__container {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
    
    .timeline::before {
        left: 50%;
        margin-left: -1px;
    }
    
    .timeline__item {
        width: 50%;
        padding-left: 0;
        padding-right: 40px;
        margin-left: 0;
        text-align: right;
    }
    
    .timeline__item:nth-child(even) {
        margin-left: 50%;
        padding-right: 0;
        padding-left: 40px;
        text-align: left;
    }
    
    .timeline__num {
        left: auto;
        right: -21px;
    }
    
    .timeline__item:nth-child(even) .timeline__num {
        right: auto;
        left: -21px;
    }
}