/* ========================================
   RESET & BASE
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #7B2FBE;
    --primary-light: #9B5DE5;
    --primary-dark: #4A1A7A;
    --secondary: #00C9A7;
    --secondary-light: #6EE7D0;
    --dark: #0F0A1A;
    --gray-900: #1A1528;
    --gray-700: #3D3566;
    --gray-500: #8B83A8;
    --gray-300: #C8C2DF;
    --gray-100: #F0EEF8;
    --white: #FFFFFF;
    --gradient-primary: linear-gradient(135deg, #7B2FBE 0%, #4A1A7A 100%);
    --gradient-accent: linear-gradient(135deg, #00C9A7 0%, #6EE7D0 100%);
    --shadow-lg: 0 20px 60px rgba(123, 47, 190, 0.15);
    --shadow-xl: 0 30px 80px rgba(123, 47, 190, 0.2);
    --radius: 16px;
    --radius-sm: 8px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--gray-100);
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border: none;
    border-radius: 50px;
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    justify-content: center;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: 0 4px 20px rgba(123, 47, 190, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(123, 47, 190, 0.4);
}

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

.btn-secondary:hover {
    background: var(--primary);
    color: var(--white);
}

.btn-accent {
    background: var(--gradient-accent);
    color: var(--dark);
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 201, 167, 0.4);
}

.btn-lg {
    padding: 18px 40px;
    font-size: 18px;
}

.btn-sm {
    padding: 10px 24px;
    font-size: 14px;
}

/* ========================================
   HEADER
   ======================================== */
.header {
    background: rgba(15, 10, 26, 0.95);
    backdrop-filter: blur(20px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(15, 10, 26, 0.98);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
    height: 76px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 44px;
    height: 44px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: white;
    font-weight: 800;
}

.logo-text {
    color: var(--white);
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo-text span {
    color: var(--secondary);
}

.nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    color: var(--gray-300);
    font-size: 15px;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary);
    transition: var(--transition);
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-phone {
    color: var(--white);
    font-weight: 600;
    font-size: 15px;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
    background: none;
    border: none;
}

.hamburger span {
    width: 28px;
    height: 3px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}

/* ========================================
   HERO
   ======================================== */
.hero {
    padding: 140px 0 80px;
    background: var(--dark);
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(123, 47, 190, 0.2) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 201, 167, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(0, 201, 167, 0.15);
    border: 1px solid rgba(0, 201, 167, 0.3);
    border-radius: 50px;
    color: var(--secondary);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

.hero-title {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.1;
    color: var(--white);
    margin-bottom: 20px;
}

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

.hero-subtitle {
    font-size: 18px;
    color: var(--gray-500);
    max-width: 500px;
    line-height: 1.7;
    margin-bottom: 32px;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-top: 32px;
}

.hero-stat h3 {
    font-size: 32px;
    font-weight: 700;
    color: var(--white);
}

.hero-stat p {
    font-size: 14px;
    color: var(--gray-500);
    font-weight: 400;
}

/* ========================================
   CALCULATOR CARD
   ======================================== */
.calculator-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow-xl);
}

.calculator-card h3 {
    color: var(--white);
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
}

.calculator-card>p {
    color: var(--gray-500);
    font-size: 14px;
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    color: var(--gray-300);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 6px;
}

.form-group select,
.form-group input {
    width: 100%;
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--white);
    font-size: 15px;
    font-family: 'Inter', sans-serif;
    transition: var(--transition);
    appearance: none;
}

.form-group select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238B83A8' stroke-width='2' fill='none'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

.form-group select:focus,
.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(123, 47, 190, 0.2);
}

.form-group select option {
    background: var(--dark);
    color: var(--white);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.calculator-result {
    margin-top: 24px;
    padding: 20px 24px;
    background: rgba(0, 201, 167, 0.08);
    border: 1px solid rgba(0, 201, 167, 0.2);
    border-radius: var(--radius-sm);
    display: none;
}

.calculator-result.show {
    display: block;
    animation: fadeIn 0.4s ease;
}

.calculator-result .price {
    font-size: 28px;
    font-weight: 700;
    color: var(--secondary);
}

.calculator-result .price-note {
    font-size: 13px;
    color: var(--gray-500);
    margin-top: 4px;
}

/* ========================================
   BENEFITS
   ======================================== */
.benefits {
    padding: 80px 0;
    background: var(--white);
}

.section-title {
    font-size: 40px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 12px;
}

.section-subtitle {
    text-align: center;
    color: var(--gray-500);
    font-size: 18px;
    max-width: 600px;
    margin: 0 auto 48px;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.benefit-card {
    padding: 32px 24px;
    background: var(--gray-100);
    border-radius: var(--radius);
    text-align: center;
    transition: var(--transition);
    border: 1px solid transparent;
}

.benefit-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary-light);
    box-shadow: var(--shadow-lg);
}

.benefit-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 28px;
    color: var(--white);
}

.benefit-card h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.benefit-card p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.6;
}

/* ========================================
   TRUST
   ======================================== */
.trust {
    padding: 60px 0;
    background: var(--gray-100);
    text-align: center;
}

.trust-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 60px;
    flex-wrap: wrap;
    margin-top: 30px;
}

/* ========================================
   CTA SECTION
   ======================================== */
.cta-section {
    padding: 80px 0;
    background: var(--dark);
    text-align: center;
}

.cta-content h2 {
    font-size: 40px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 12px;
}

.cta-content p {
    color: var(--gray-500);
    font-size: 18px;
    margin-bottom: 32px;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: var(--dark);
    padding: 60px 0 30px;
    color: var(--gray-500);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand p {
    max-width: 300px;
    margin-top: 12px;
    font-size: 14px;
    line-height: 1.7;
}

.footer h5 {
    color: var(--white);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    font-size: 14px;
    transition: var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    font-size: 13px;
}

/* ========================================
   MODAL
   ======================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
}

.modal.open {
    display: flex;
}

.modal-content {
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius);
    max-width: 480px;
    width: 100%;
    position: relative;
    animation: fadeIn 0.3s ease;
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 20px;
    background: none;
    border: none;
    font-size: 28px;
    color: var(--gray-500);
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--dark);
}

.modal-content h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 4px;
}

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }

    .hero-title {
        font-size: 40px;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: var(--dark);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .nav.active {
        display: flex;
    }

    .hamburger {
        display: flex;
    }

    .header-phone {
        display: none;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 20px;
    }

    .hero-stats h3 {
        font-size: 24px;
    }

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .calculator-card {
        padding: 24px;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

    .section-title {
        font-size: 30px;
    }

    .cta-content h2 {
        font-size: 30px;
    }

    .modal-content {
        margin: 16px;
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero {
        padding: 120px 0 60px;
    }

    .hero-title {
        font-size: 28px;
    }

    .btn-lg {
        padding: 14px 28px;
        font-size: 16px;
    }
}