/* ==========================================================================
   1. BASE - Fonts, Reset, Variables, Base Styles
   ========================================================================== */

/* 1.1 Font Imports */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@600;700;800&family=Lato:wght@400;700&display=swap');

/* 1.2 Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* 1.3 CSS Variables */
:root {
    --color-primary: #8A2BE2;
    /* Vibrant Violet */
    --color-primary-dark: #6A1B9A;
    --color-secondary: #FFD700;
    /* Gold Accent */
    --color-bg-dark: #121218;
    --color-bg-light: #1E1E24;
    --color-border: #2d2d3a;
    --color-text-light: #EAEAEA;
    --color-text-medium: #999999;
    --color-white: #ffffff;

    --font-family-heading: 'Montserrat', sans-serif;
    --font-family-body: 'Lato', sans-serif;

    --font-size-sm: 0.875rem;
    /* 14px */
    --font-size-base: 1rem;
    /* 16px */
    --font-size-lg: 1.125rem;
    /* 18px */
    --font-size-xl: 1.25rem;
    /* 20px */
    --font-size-2xl: 1.5rem;
    /* 24px */
    --font-size-3xl: 2.25rem;
    /* 36px */
    --font-size-4xl: 3rem;
    /* 48px */
    --font-size-5xl: 4rem;
    /* 64px */

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3.5rem;
    --spacing-3xl: 5rem;

    --border-radius: 6px;
    --transition-speed: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --shadow-light: 0 4px 15px rgba(0, 0, 0, 0.2);
    --shadow-medium: 0 8px 30px rgba(0, 0, 0, 0.3);
}

/* 1.4 Base Styles */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-body);
    background-color: var(--color-bg-dark);
    color: var(--color-text-medium);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-family-heading);
    color: var(--color-text-light);
    font-weight: 700;
    line-height: 1.3;
}

h1 {
    font-size: var(--font-size-5xl);
}

h2 {
    font-size: var(--font-size-4xl);
}

h3 {
    font-size: var(--font-size-2xl);
}

h4 {
    font-size: var(--font-size-lg);
}

p {
    margin-bottom: var(--spacing-md);
}

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

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

ul {
    list-style: none;
}

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

::selection {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* ==========================================================================
   2. LAYOUT
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

section {
    padding: var(--spacing-3xl) 0;
}

/* ==========================================================================
   3. COMPONENTS
   ========================================================================== */
/* 3.1 Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    font-family: var(--font-family-heading);
    font-weight: 600;
    border-radius: var(--border-radius);
    cursor: pointer;
    text-align: center;
    border: 2px solid transparent;
    transition: all var(--transition-speed);
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(138, 43, 226, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text-light);
    border-color: var(--color-text-light);
}

.btn-secondary:hover {
    background-color: var(--color-text-light);
    color: var(--color-bg-dark);
    transform: translateY(-3px);
}

.btn-lg {
    padding: 1rem 2.5rem;
}

.btn-block {
    display: block;
    width: 100%;
}

/* 3.2 Section Header */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-tagline {
    display: block;
    color: var(--color-secondary);
    font-family: var(--font-family-heading);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    max-width: 650px;
    margin: 0 auto;
    font-size: var(--font-size-lg);
}

/* ==========================================================================
   4. HEADER & NAVIGATION
   ========================================================================== */
#main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: transparent;
    transition: background-color 0.4s ease, box-shadow 0.4s ease, padding 0.4s ease;
    padding: var(--spacing-md) 0;
}

#main-header.scrolled {
    background-color: rgba(18, 18, 24, 0.85);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-medium);
    padding: var(--spacing-sm) 0;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
}

.nav-logo img {
    height: 50px;
    filter: invert(1);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-link {
    color: var(--color-text-light);
    font-weight: 700;
    position: relative;
    padding-bottom: 5px;
}

.nav-link.active,
.nav-link:hover {
    color: var(--color-secondary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background-color: var(--color-secondary);
    transition: width var(--transition-speed);
}

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

.header-cta {
    margin-left: var(--spacing-xl);
}

.hamburger {
    display: none;
    cursor: pointer;
}

.bar {
    display: block;
    width: 28px;
    height: 3px;
    margin: 5px auto;
    transition: all 0.3s ease-in-out;
    background-color: var(--color-text-light);
    border-radius: 3px;
}

/* ==========================================================================
   5. FOOTER
   ========================================================================== */
#main-footer {
    background-color: #0c0c10;
    padding-top: var(--spacing-3xl);
    border-top: 1px solid var(--color-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr;
    gap: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
}

.footer-col h4 {
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
}

.footer-about .footer-logo img {
    height: 50px;
    filter: invert(1);
    margin-bottom: var(--spacing-md);
}

.social-icons {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.social-icons a svg {
    width: 24px;
    height: 24px;
    fill: var(--color-text-medium);
    transition: var(--transition-speed);
}

.social-icons a:hover svg {
    fill: var(--color-secondary);
    transform: translateY(-3px);
}

.footer-links ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--color-text-medium);
}

.footer-contact ul li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: var(--spacing-md);
}

.footer-contact svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    fill: var(--color-primary);
    margin-top: 3px;
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-sm);
}

.footer-legal-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-legal-links a {
    color: var(--color-text-medium);
}

/* ==========================================================================
   6. PAGE-SPECIFIC STYLES
   ========================================================================== */

/* 6.1 Hero Section */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    text-align: left;
}

.hero-video-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

#heroVideo {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(18, 18, 24, 0.95) 0%, rgba(18, 18, 24, 0.6) 60%, rgba(18, 18, 24, 0.2) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
}

.text-rotator-wrapper {
    display: inline-block;
    position: relative;
    color: var(--color-secondary);
    text-transform: uppercase;
}

.text-rotator-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    transform: translateY(20px);
    animation: text-rotate 10s infinite;
}

.text-rotator-item:nth-child(2) {
    animation-delay: 2.5s;
}

.text-rotator-item:nth-child(3) {
    animation-delay: 5s;
}

.text-rotator-item:nth-child(4) {
    animation-delay: 7.5s;
}

.text-rotator-item.is-visible {
    position: relative;
    opacity: 1;
    transform: translateY(0);
}

@keyframes text-rotate {

    0%,
    20% {
        opacity: 1;
        transform: translateY(0);
    }

    25%,
    100% {
        opacity: 0;
        transform: translateY(-20px);
    }
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-xl);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* 6.2 Partners Section */
.partners-section {
    background-color: var(--color-bg-light);
    padding: var(--spacing-2xl) 0;
}

.partners-title {
    text-align: center;
    color: var(--color-text-medium);
    margin-bottom: var(--spacing-xl);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: var(--font-size-base);
}

.partners-grid {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
}

.partner-logo {
    filter: grayscale(100%) opacity(0.5);
    transition: var(--transition-speed);
    font-family: var(--font-family-heading);
    font-size: 1.5rem;
}

.partner-logo:hover {
    filter: grayscale(0%) opacity(1);
}

/* 6.3 Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    background-color: var(--color-bg-light);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: radial-gradient(circle at top left, var(--color-primary), transparent 40%);
    opacity: 0;
    transition: opacity var(--transition-speed);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-medium);
}

.service-card:hover::before {
    opacity: 0.1;
}

.service-icon {
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
}

.service-icon svg {
    width: 50px;
    height: 50px;
    fill: currentColor;
}

.service-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
}

/* 6.4 Process Section */
.process-section {
    background-color: var(--color-bg-light);
}

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

.timeline::after {
    content: '';
    position: absolute;
    width: 3px;
    background-color: var(--color-border);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -1.5px;
}

.timeline-item {
    padding: var(--spacing-md) var(--spacing-2xl);
    position: relative;
    width: 50%;
}

.timeline-item:nth-child(odd) {
    left: 0;
    text-align: right;
}

.timeline-item:nth-child(even) {
    left: 50%;
    text-align: left;
}

.timeline-dot {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: var(--color-bg-dark);
    border: 4px solid var(--color-secondary);
    top: 35px;
    border-radius: 50%;
    z-index: 1;
    transition: transform var(--transition-speed);
}

.timeline-item:hover .timeline-dot {
    transform: scale(1.2);
}

.timeline-item:nth-child(odd) .timeline-dot {
    right: -10px;
}

.timeline-item:nth-child(even) .timeline-dot {
    left: -10px;
}

.timeline-content {
    background-color: var(--color-bg-dark);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    position: relative;
    border: 1px solid var(--color-border);
}

.timeline-step {
    color: var(--color-secondary);
    font-size: var(--font-size-3xl);
    font-weight: 800;
    opacity: 0.2;
}

.timeline-title {
    margin-top: -10px;
    margin-bottom: var(--spacing-sm);
}

/* 6.5 ROI Calculator Section */
.roi-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.roi-calculator-wrapper {
    background-color: var(--color-bg-light);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.roi-calculator-wrapper .form-group {
    margin-bottom: var(--spacing-lg);
}

.roi-calculator-wrapper label {
    display: block;
    margin-bottom: var(--spacing-sm);
}

.roi-calculator-wrapper input[type="range"] {
    width: 100%;
    -webkit-appearance: none;
    background: var(--color-border);
    height: 8px;
    border-radius: 5px;
}

.roi-calculator-wrapper input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
}

.range-value {
    display: block;
    text-align: right;
    color: var(--color-text-light);
    font-weight: 700;
}

.roi-results {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.roi-results h4 {
    color: var(--color-text-medium);
}

.roi-results p {
    font-size: var(--font-size-4xl);
    color: var(--color-secondary);
    font-weight: 800;
}

/* 6.6 Testimonials Section */
.testimonials-section {
    background-color: var(--color-bg-light);
}

.testimonial-slider-container {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.testimonial-slider {
    position: relative;
    height: 250px;
}

.testimonial-card {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.testimonial-card.active {
    opacity: 1;
    transform: scale(1);
}

.testimonial-card img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin: 0 auto var(--spacing-lg);
    border: 3px solid var(--color-primary);
}

.testimonial-card blockquote {
    font-size: var(--font-size-xl);
    font-style: italic;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-light);
}

.testimonial-card cite {
    font-style: normal;
    font-weight: 700;
    color: var(--color-text-medium);
}

.slider-nav {
    margin-top: var(--spacing-lg);
    display: flex;
    justify-content: center;
    gap: 10px;
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--color-border);
    border: none;
    cursor: pointer;
    transition: background-color var(--transition-speed);
}

.slider-dot.active {
    background-color: var(--color-primary);
}

/* 6.7 FAQ Section */
.faq-accordion {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
}

.faq-question {
    width: 100%;
    background: transparent;
    border: none;
    padding: var(--spacing-lg) 0;
    text-align: left;
    font-family: var(--font-family-heading);
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-icon {
    width: 14px;
    height: 14px;
    position: relative;
    transition: transform var(--transition-speed);
}

.faq-icon::before,
.faq-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-text-light);
    border-radius: 2px;
}

.faq-icon::after {
    transform: rotate(90deg);
}

.faq-item.active .faq-icon {
    transform: rotate(135deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out;
}

.faq-answer p {
    padding: 0 0 var(--spacing-lg) 0;
}

/* 6.8 Contact & Legal Pages */
.page-header {
    padding: 180px 0 100px 0;
    text-align: center;
    background: linear-gradient(rgba(18, 18, 24, 0.9), rgba(18, 18, 24, 0.9)), url('https://images.pexels.com/photos/5926382/pexels-photo-5926382.jpeg?auto=compress&cs=tinysrgb&w=1260&h=750&dpr=1') no-repeat center center/cover;
}

.page-title {
    font-size: var(--font-size-5xl);
}

.contact-section {
    padding-bottom: var(--spacing-3xl);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-2xl);
}

.contact-form .form-row {
    display: flex;
    gap: var(--spacing-lg);
}

.form-group {
    margin-bottom: var(--spacing-lg);
    width: 100%;
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 700;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.8rem 1rem;
    background-color: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    color: var(--color-text-light);
    font-family: var(--font-family-body);
    transition: border-color var(--transition-speed);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.contact-info h3 {
    margin-bottom: var(--spacing-lg);
}

.info-list li {
    margin-bottom: var(--spacing-xl);
}

.info-list h4 {
    color: var(--color-text-light);
}

.info-list p {
    margin: 0;
}

.legal-content {
    padding: var(--spacing-3xl) 0;
}

.legal-content .container {
    max-width: 800px;
}

.legal-content h2 {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.legal-content ul {
    list-style-type: disc;
    padding-left: 20px;
    margin-bottom: var(--spacing-md);
}

/* ==========================================================================
   7. ANIMATIONS
   ========================================================================== */
.animate-on-scroll {
    opacity: 0;
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll[data-animation="fade-in-up"] {
    transform: translateY(40px);
}

.animate-on-scroll[data-animation="slide-in-left"] {
    transform: translateX(-40px);
}

.animate-on-scroll[data-animation="slide-in-right"] {
    transform: translateX(40px);
}

.animate-on-scroll[data-animation="zoom-in"] {
    transform: scale(0.9);
}

.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translate(0, 0) scale(1);
}

/* ==========================================================================
   8. RESPONSIVENESS
   ========================================================================== */
@media (max-width: 992px) {

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

    .contact-form-container {
        order: 2;
    }

    .contact-info {
        order: 1;
    }

    .timeline::after {
        left: 30px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }

    .timeline-item:nth-child(even) {
        left: 0;
    }

    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        text-align: left;
    }

    .timeline-item:nth-child(odd) .timeline-dot,
    .timeline-item:nth-child(even) .timeline-dot {
        left: 20px;
    }

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

    .social-icons,
    .footer-contact ul,
    .footer-legal-links {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.8rem;
        --font-size-4xl: 2.2rem;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 0;
        flex-direction: column;
        background-color: var(--color-bg-light);
        width: 100%;
        height: 100vh;
        text-align: center;
        transition: 0.3s;
        gap: var(--spacing-lg);
        padding-top: 100px;
    }

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

    .nav-item {
        margin: 1rem 0;
    }

    .nav-link {
        font-size: var(--font-size-xl);
    }

    .header-cta {
        display: none;
    }

    .hamburger {
        display: block;
        z-index: 1001;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero {
        text-align: center;
    }

    .hero-overlay {
        background: rgba(18, 18, 24, 0.85);
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .contact-form .form-row {
        flex-direction: column;
        gap: 0;
    }
}

@media (max-width: 576px) {
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }

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