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

:root {
    /* Colors */
    --primary-blue: #4A9FF5;
    --primary-dark: #1a1a1a;
    --text-primary: #0a0a0a;
    --text-secondary: #666666;
    --text-light: #999999;
    --bg-light: #fafafa;
    --bg-white: #ffffff;
    --border-color: #e5e5e5;
    --gradient-start: #4A9FF5;
    --gradient-end: #2b7fd6;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Inter', sans-serif;
    
    /* Spacing */
    --section-padding: 120px;
    --container-width: 1200px;
    
    /* Transitions */
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

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

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

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

/* ====================================
   TYPOGRAPHY
   ==================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    margin-bottom: 1.5rem;
}

h2 {
    font-size: clamp(2rem, 4vw, 3.5rem);
    margin-bottom: 1rem;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: 0.75rem;
}

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.large-text {
    font-size: 1.25rem;
    line-height: 1.7;
    color: var(--text-primary);
}

.gradient-text {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ====================================
   BUTTONS
   ==================================== */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition-smooth);
    text-align: center;
    letter-spacing: 0.3px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    box-shadow: 0 4px 20px rgba(74, 159, 245, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(74, 159, 245, 0.4);
}

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

.btn-secondary:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

.btn-large {
    padding: 18px 48px;
    font-size: 1.1rem;
}

.btn-nav {
    padding: 10px 24px;
    background: var(--primary-blue);
    color: white;
    border-radius: 6px;
}

.btn-nav:hover {
    background: var(--gradient-end);
}

/* ====================================
   NAVIGATION
   ==================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
    transition: var(--transition-smooth);
}

.navbar.scrolled {
    padding: 12px 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-display);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    text-transform: lowercase;
    letter-spacing: -0.02em;
}

.logo-line {
    width: 2px;
    height: 24px;
    background: var(--primary-blue);
}

.logo-subtext {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: lowercase;
    letter-spacing: -0.01em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
    align-items: center;
}

.nav-menu a {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-smooth);
}

/* ====================================
   HERO SECTION
   ==================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    position: relative;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-image {
    position: relative;
}

.hero-image-wrapper {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
}

.hero-img {
    width: 100%;
    height: auto;
    display: block;
    position: relative;
    z-index: 2;
}

.image-backdrop {
    position: absolute;
    top: 20px;
    right: -20px;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 20px;
    z-index: 1;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-light);
    font-size: 0.85rem;
    font-weight: 500;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: var(--text-light);
    animation: scrollPulse 2s infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

/* ====================================
   SECTION STYLING
   ==================================== */
section {
    padding: var(--section-padding) 0;
}

.section-header {
    margin-bottom: 60px;
}

.section-header.center {
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 60px;
}

.section-label {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(74, 159, 245, 0.1);
    color: var(--primary-blue);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-top: 16px;
}

/* ====================================
   ABOUT SECTION
   ==================================== */
.about {
    background: var(--bg-light);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-text p {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 24px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 60px;
    padding-top: 60px;
    border-top: 1px solid var(--border-color);
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-blue);
    font-family: var(--font-display);
}

.stat-label {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-top: 8px;
}

/* ====================================
   SERVICES SECTION
   ==================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.service-card {
    background: white;
    padding: 40px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: var(--transition-smooth);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    border-color: var(--primary-blue);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 24px;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.service-card p {
    font-size: 1rem;
    line-height: 1.7;
}

/* ====================================
   PACKAGE BUILDER SECTION
   ==================================== */
.package-builder {
    background: var(--bg-light);
}

.builder-container {
    max-width: 900px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    padding: 60px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
}

.package-form {
    position: relative;
}

.form-step {
    display: none;
}

.form-step.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.step-title {
    font-size: 2rem;
    margin-bottom: 12px;
}

.step-description {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 40px;
}

/* Services Checklist */
.services-checklist {
    display: grid;
    gap: 16px;
    margin-bottom: 32px;
}

.checkbox-card {
    position: relative;
    cursor: pointer;
    display: block;
}

.checkbox-card input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.checkbox-card .card-content {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    transition: var(--transition-smooth);
    background: white;
}

.checkbox-card:hover .card-content {
    border-color: var(--primary-blue);
    background: rgba(74, 159, 245, 0.02);
}

.checkbox-card input[type="checkbox"]:checked ~ .card-content {
    border-color: var(--primary-blue);
    background: rgba(74, 159, 245, 0.05);
}

.card-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.card-text h4 {
    font-size: 1.1rem;
    margin-bottom: 4px;
}

.card-text p {
    font-size: 0.9rem;
    color: var(--text-light);
    margin: 0;
}

.card-check {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 24px;
    height: 24px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    transition: var(--transition-smooth);
}

.checkbox-card input[type="checkbox"]:checked ~ .card-content .card-check {
    border-color: var(--primary-blue);
    background: var(--primary-blue);
}

.checkbox-card input[type="checkbox"]:checked ~ .card-content .card-check::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 14px;
    font-weight: bold;
}

/* Form Groups */
.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition-smooth);
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(74, 159, 245, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.other-input {
    margin-top: 20px;
}

.hidden {
    display: none !important;
}

/* Form Navigation */
.form-navigation {
    display: flex;
    gap: 16px;
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

.form-navigation .btn {
    flex: 1;
}

/* Progress Indicator */
.progress-indicator {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

.progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.step-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--text-light);
    transition: var(--transition-smooth);
}

.progress-step.active .step-number {
    border-color: var(--primary-blue);
    background: var(--primary-blue);
    color: white;
}

.progress-step.completed .step-number {
    border-color: var(--primary-blue);
    background: var(--primary-blue);
    color: white;
}

.step-label {
    font-size: 0.85rem;
    color: var(--text-light);
    font-weight: 600;
}

.progress-step.active .step-label {
    color: var(--primary-blue);
}

.progress-line {
    width: 100px;
    height: 2px;
    background: var(--border-color);
    margin: 0 20px;
}

/* Success Message */
.success-message {
    text-align: center;
    padding: 80px 40px;
    animation: fadeIn 0.6s ease;
}

.success-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    font-size: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.success-message h3 {
    font-size: 2rem;
    margin-bottom: 16px;
}

.success-message p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* ====================================
   CTA SECTION
   ==================================== */
.cta-section {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    text-align: center;
    padding: 100px 0;
}

.cta-content h2 {
    color: white;
    margin-bottom: 20px;
}

.cta-content p {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin: 0 auto 40px;
}

.cta-content .btn-primary {
    background: white;
    color: var(--primary-blue);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.cta-content .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(0, 0, 0, 0.15);
}

/* ====================================
   CONTACT SECTION
   ==================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.contact-info h3 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.contact-info > p {
    font-size: 1.05rem;
    margin-bottom: 40px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-method {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.method-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.method-details h4 {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.method-details a {
    color: var(--primary-blue);
    font-weight: 500;
}

.method-details a:hover {
    text-decoration: underline;
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.contact-image {
    border-radius: 20px;
    overflow: hidden;
}

.contact-image img {
    width: 100%;
    height: auto;
}

/* ====================================
   FOOTER
   ==================================== */
.footer {
    background: var(--primary-dark);
    color: white;
    padding: 80px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    margin-top: 16px;
}

.footer .logo-text,
.footer .logo-subtext {
    color: white;
}

.footer-column h4 {
    color: white;
    font-size: 1.1rem;
    margin-bottom: 20px;
}

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

.footer-column ul li {
    margin-bottom: 12px;
}

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

.footer-column ul li a:hover {
    color: white;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* ====================================
   RESPONSIVE DESIGN
   ==================================== */
@media (max-width: 968px) {
    :root {
        --section-padding: 80px;
    }

    .hero .container {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .hero-image {
        order: -1;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 40px 0;
    }

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

    .hamburger {
        display: flex;
    }

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

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

    .builder-container {
        padding: 40px 30px;
    }

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

    .progress-indicator {
        flex-wrap: wrap;
    }

    .progress-line {
        display: none;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 640px) {
    .hero-cta {
        flex-direction: column;
    }

    .hero-cta .btn {
        width: 100%;
    }

    .builder-container {
        padding: 30px 20px;
    }

    .checkbox-card .card-content {
        padding: 16px;
    }

    .card-check {
        top: 16px;
        right: 16px;
    }
}