/*
================================================
TABLE OF CONTENTS
------------------------------------------------
1.  CSS Custom Properties (Variables)
2.  General & Reset Styles
3.  Typography & Utility Classes
4.  Header & Navigation
5.  Hero Section
6.  Services Section (Flip Cards)
7.  Interactive Funnel Section
8.  Tech Stack Section
9.  Testimonials Section (Carousel)
10. Call to Action (CTA) Section
11. Footer
12. Contact Page Styles
13. Legal Page Styles
14. Animations & Transitions
15. Responsive Design (Media Queries)
================================================
*/

/* 1. CSS Custom Properties */
:root {
    --color-primary: #00ff9d;
    /* Electric Green */
    --color-secondary: #4d94ff;
    /* Bright Blue */
    --color-background-dark: #121212;
    --color-background-medium: #1a1a1a;
    --color-background-light: #242424;
    --color-text-primary: #e0e0e0;
    --color-text-secondary: #a0a0a0;
    --color-border: rgba(255, 255, 255, 0.1);
    --font-primary: 'Roboto Mono', monospace;
    --font-secondary: 'Inter', sans-serif;
    --header-height: 80px;
    --border-radius: 6px;
    --transition-speed: 0.4s;
    --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

/* 2. General & Reset Styles */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    background-color: var(--color-background-dark);
    color: var(--color-text-primary);
    font-family: var(--font-secondary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
    color: #fff;
}

ul {
    list-style: none;
}

/* 3. Typography & Utility Classes */
h1,
h2,
h3,
h4 {
    font-family: var(--font-primary);
    font-weight: 500;
    color: var(--color-text-primary);
    line-height: 1.3;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-padding {
    padding: 120px 0;
}

.dark-bg {
    background-color: var(--color-background-medium);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: var(--border-radius);
    font-weight: 500;
    font-family: var(--font-primary);
    text-align: center;
    transition: all var(--transition-speed) ease;
    cursor: pointer;
    border: 1px solid transparent;
}

.btn-primary {
    background-color: var(--color-primary);
    color: #000;
    border-color: var(--color-primary);
}

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

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

.btn-secondary:hover {
    background-color: var(--color-text-primary);
    color: #000;
}

.section-title {
    text-align: center;
    margin-bottom: 70px;
}

.section-title h2 {
    position: relative;
    display: inline-block;
    padding-bottom: 15px;
}

.section-title h2::after {
    content: '_';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--color-primary);
    animation: blink 1s infinite;
}

@keyframes blink {
    50% {
        opacity: 0;
    }
}

.section-title p {
    max-width: 600px;
    margin: 0.5rem auto 0;
    font-size: 1.1rem;
}

/* 4. Header & Navigation */
#main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    height: var(--header-height);
    display: flex;
    align-items: center;
    background-color: rgba(18, 18, 18, 0.7);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition-speed) ease;
}

#main-header.scrolled {
    background-color: rgba(18, 18, 18, 0.9);
    border-bottom-color: var(--color-border);
}

#main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

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

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

.logo-text {
    font-size: 1.6rem;
    font-family: var(--font-primary);
    color: var(--color-text-primary);
}

#main-nav ul {
    display: flex;
    gap: 40px;
}

#main-nav a {
    color: var(--color-text-secondary);
    font-weight: 500;
    position: relative;
    padding: 8px 4px;
    font-family: var(--font-primary);
}

#main-nav a:hover,
#main-nav a.active {
    color: var(--color-primary);
}

#main-nav a::before {
    content: '[';
    position: absolute;
    left: -10px;
    opacity: 0;
    transition: all var(--transition-speed) ease;
}

#main-nav a::after {
    content: ']';
    position: absolute;
    right: -10px;
    opacity: 0;
    transition: all var(--transition-speed) ease;
}

#main-nav a:hover::before,
#main-nav a:hover::after,
#main-nav a.active::before,
#main-nav a.active::after {
    opacity: 1;
}

#hamburger-menu {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
    width: 30px;
    height: 30px;
    position: relative;
}

#hamburger-menu .bar {
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-text-primary);
    transition: all 0.4s ease;
}

#hamburger-menu .bar::before,
#hamburger-menu .bar::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-text-primary);
    transition: all 0.4s ease;
}

#hamburger-menu .bar::before {
    top: -8px;
}

#hamburger-menu .bar::after {
    bottom: -8px;
}

#hamburger-menu.active .bar {
    background: transparent;
}

#hamburger-menu.active .bar::before {
    transform: rotate(45deg) translate(6px, 6px);
}

#hamburger-menu.active .bar::after {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* 5. Hero Section */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: var(--header-height);
}

.hero-grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: linear-gradient(var(--color-border) 1px, transparent 1px), linear-gradient(to right, var(--color-border) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.2;
    z-index: -1;
    animation: pan-grid 30s linear infinite;
}

@keyframes pan-grid {
    from {
        background-position: 0 0;
    }

    to {
        background-position: -40px -40px;
    }
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    align-items: center;
    gap: 50px;
}

.hero-content h1 {
    margin-bottom: 1.5rem;
}

.hero-content p {
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
    max-width: 550px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.text-highlight {
    color: var(--color-primary);
}

#typewriter::after {
    content: '_';
    color: var(--color-primary);
    animation: blink 1s infinite;
}

.hero-visual {
    position: relative;
    height: 350px;
    border: 1px solid var(--color-border);
    background: var(--color-background-medium);
    padding: 20px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: flex-end;
    justify-content: space-around;
}

.chart-bar {
    width: 12%;
    background: linear-gradient(to top, var(--color-secondary), var(--color-primary));
    border-radius: 4px 4px 0 0;
    animation: grow-bar 1.5s ease-out forwards;
    transform-origin: bottom;
    transform: scaleY(0);
}

.chart-bar:nth-child(2) {
    animation-delay: 0.1s;
}

.chart-bar:nth-child(3) {
    animation-delay: 0.2s;
}

.chart-bar:nth-child(4) {
    animation-delay: 0.3s;
}

.chart-bar:nth-child(5) {
    animation-delay: 0.4s;
}

@keyframes grow-bar {
    to {
        transform: scaleY(1);
    }
}

.data-point {
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--color-primary);
    border-radius: 50%;
    opacity: 0;
    animation: fade-in 1s ease forwards 1s;
}

.data-line {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.data-line path {
    fill: none;
    stroke: var(--color-secondary);
    stroke-width: 2;
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    animation: draw-line 2s ease-out forwards 1.2s;
}

@keyframes draw-line {
    to {
        stroke-dashoffset: 0;
    }
}

/* 6. Services Section (Flip Cards) */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: transparent;
    height: 320px;
    perspective: 1000px;
}

.service-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.8s;
    transform-style: preserve-3d;
}

.service-card:hover .service-card-inner {
    transform: rotateY(180deg);
}

.service-card-front,
.service-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 30px;
    background-color: var(--color-background-medium);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
}

.service-card-back {
    transform: rotateY(180deg);
}

.service-icon {
    margin-bottom: 20px;
    color: var(--color-primary);
}

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

.service-link {
    margin-top: 15px;
    font-weight: bold;
}

/* 7. Interactive Funnel Section */
.funnel-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.funnel-stage {
    display: flex;
    align-items: center;
    cursor: pointer;
    width: 100%;
    max-width: 800px;
    margin-bottom: -1px;
}

.funnel-label {
    width: 200px;
    text-align: right;
    padding-right: 20px;
    font-family: var(--font-primary);
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    transition: color var(--transition-speed);
}

.funnel-label span {
    display: inline-block;
    background: var(--color-secondary);
    color: #000;
    width: 30px;
    height: 30px;
    line-height: 30px;
    text-align: center;
    border-radius: 50%;
    margin-right: 10px;
}

.funnel-shape {
    height: 80px;
    flex-grow: 1;
    background: var(--color-background-light);
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    transition: all var(--transition-speed) ease;
    border: 1px solid var(--color-border);
}

.funnel-stage:nth-child(1) .funnel-shape {
    clip-path: polygon(15% 0, 85% 0, 100% 100%, 0% 100%);
}

.funnel-stage:nth-child(2) .funnel-shape {
    clip-path: polygon(25% 0, 75% 0, 85% 100%, 15% 100%);
}

.funnel-stage:nth-child(3) .funnel-shape {
    clip-path: polygon(35% 0, 65% 0, 75% 100%, 25% 100%);
}

.funnel-stage:nth-child(4) .funnel-shape {
    clip-path: polygon(45% 0, 55% 0, 65% 100%, 35% 100%);
    border-radius: 0 0 5px 5px;
}

.funnel-stage.active .funnel-label {
    color: var(--color-primary);
}

.funnel-stage.active .funnel-shape {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

#funnel-content-display {
    margin-top: 50px;
    background: var(--color-background-light);
    padding: 40px;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    min-height: 150px;
}

.funnel-content {
    display: none;
}

.funnel-content.active {
    display: block;
    animation: fade-in 0.5s ease;
}

.funnel-content h3 {
    color: var(--color-primary);
}

/* 8. Tech Stack Section */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.tool-item {
    background: var(--color-background-medium);
    border: 1px solid var(--color-border);
    padding: 30px;
    text-align: center;
    font-family: var(--font-primary);
    border-radius: var(--border-radius);
    transition: all var(--transition-speed) ease;
}

.tool-item:hover {
    transform: translateY(-8px);
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: 0 0 20px rgba(0, 255, 157, 0.2);
}

/* 9. Testimonials Section (Carousel) */
.testimonial-carousel-wrapper {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    height: 300px;
}

.testimonial-carousel {
    position: relative;
    width: 100%;
    height: 100%;
}

.testimonial-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding: 40px;
    background: var(--color-background-light);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align: center;
    transition: transform 0.5s ease, opacity 0.5s ease, z-index 0.5s;
    opacity: 0;
}

.testimonial-slide.active {
    transform: translateX(0) scale(1);
    opacity: 1;
    z-index: 10;
}

.testimonial-slide.prev {
    transform: translateX(-50%) scale(0.8);
    opacity: 0.5;
    z-index: 9;
}

.testimonial-slide.next {
    transform: translateX(50%) scale(0.8);
    opacity: 0.5;
    z-index: 9;
}

.testimonial-quote {
    font-size: 1.1rem;
    font-style: italic;
    margin-bottom: 20px;
}

.testimonial-author {
    font-weight: bold;
    color: var(--color-primary);
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: var(--color-background-light);
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    width: 45px;
    height: 45px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 20;
    transition: all var(--transition-speed) ease;
}

.carousel-btn:hover {
    background: var(--color-primary);
    color: #000;
    border-color: var(--color-primary);
}

.carousel-btn.prev {
    left: -70px;
}

.carousel-btn.next {
    right: -70px;
}

/* 10. Call to Action (CTA) Section */
#cta {
    background: linear-gradient(rgba(18, 18, 18, 0.9), rgba(18, 18, 18, 0.9)), url('https://www.transparenttextures.com/patterns/carbon-fibre-v2.png');
}

.cta-container {
    text-align: center;
    padding: 60px 20px;
}

.cta-container h2 {
    color: var(--color-primary);
}

.cta-container p {
    max-width: 600px;
    margin: 1rem auto 2rem;
}

/* 11. Footer */
#main-footer {
    background-color: var(--color-background-medium);
    padding-top: 80px;
    border-top: 1px solid var(--color-border);
}

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

.footer-col.about p {
    margin-top: 20px;
    max-width: 300px;
}

.links-group {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.footer-col h4 {
    font-family: var(--font-primary);
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--color-text-primary);
}

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

.footer-col ul a {
    color: var(--color-text-secondary);
}

.footer-col ul a:hover {
    color: var(--color-primary);
    padding-left: 5px;
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding: 25px 0;
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

/* 12. Contact Page Styles */
#contact-page {
    background: var(--color-background-medium);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 50px;
    background: var(--color-background-dark);
    padding: 50px;
    border-radius: var(--border-radius);
}

.contact-info .info-item {
    margin-bottom: 30px;
}

.contact-info .info-label {
    display: block;
    font-family: var(--font-primary);
    color: var(--color-primary);
    margin-bottom: 5px;
}

.contact-form-container .form-row {
    display: flex;
    gap: 20px;
}

.form-group {
    position: relative;
    margin-bottom: 30px;
    width: 100%;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px;
    background: var(--color-background-medium);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    color: var(--color-text-primary);
    font-family: var(--font-secondary);
    transition: border-color var(--transition-speed);
    font-size: 1rem;
}

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

.form-group label {
    position: absolute;
    top: 15px;
    left: 15px;
    color: var(--color-text-secondary);
    pointer-events: none;
    transition: all 0.3s ease;
}

.form-group input:focus+label,
.form-group input:not(:placeholder-shown)+label,
.form-group textarea:focus+label,
.form-group textarea:not(:placeholder-shown)+label {
    top: -10px;
    left: 10px;
    font-size: 0.8rem;
    background: var(--color-background-dark);
    padding: 0 5px;
    color: var(--color-primary);
}

.form-group select {
    color: var(--color-text-secondary);
}

.form-group select:valid {
    color: var(--color-text-primary);
}

/* 13. Legal Page Styles */
.legal-page .container {
    max-width: 800px;
    background: var(--color-background-medium);
    padding: 50px;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.legal-page h1 {
    margin-bottom: 2rem;
    color: var(--color-primary);
}

.legal-page h2 {
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    font-size: 1.5rem;
    color: var(--color-text-primary);
    border-bottom: 1px solid var(--color-primary);
    padding-bottom: 0.5rem;
}

.legal-page p,
.legal-page li {
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.legal-page ul {
    list-style: square;
    padding-left: 20px;
    margin-bottom: 1rem;
}

.legal-page li {
    margin-bottom: 0.5rem;
}

/* 14. Animations & Transitions */
.animate-on-load {
    opacity: 0;
    transform: translateY(20px);
    animation: fade-in-up 0.8s ease-out forwards;
}

@keyframes fade-in-up {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

.services-grid .animate-on-scroll:nth-child(2) {
    transition-delay: 0.1s;
}

.services-grid .animate-on-scroll:nth-child(3) {
    transition-delay: 0.2s;
}

.services-grid .animate-on-scroll:nth-child(4) {
    transition-delay: 0.3s;
}

@keyframes fade-in {
    to {
        opacity: 1;
    }
}

/* 15. Responsive Design */
@media (max-width: 992px) {
    #main-nav {
        position: fixed;
        top: 0;
        right: 0;
        width: 100%;
        max-width: 320px;
        height: 100vh;
        background-color: var(--color-background-medium);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        text-align: center;
        transform: translateX(100%);
        transition: transform var(--transition-speed) ease-in-out;
    }

    #main-nav.active {
        transform: translateX(0);
    }

    #main-nav ul {
        flex-direction: column;
        gap: 40px;
    }

    #main-nav a {
        font-size: 1.3rem;
    }

    .header-cta {
        display: none;
    }

    #hamburger-menu {
        display: block;
    }

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

    .hero-content p {
        margin-left: auto;
        margin-right: auto;
    }

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

    .hero-visual {
        margin-top: 50px;
        height: 300px;
    }

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

    .links-group {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }

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

    .contact-info {
        text-align: center;
    }
}

@media (max-width: 768px) {
    .section-padding {
        padding: 80px 0;
    }

    .carousel-btn {
        display: none;
    }

    /* Hide side buttons, rely on swipe on mobile (not implemented) or auto-play */
    .funnel-stage {
        flex-direction: column;
        text-align: center;
    }

    .funnel-label {
        text-align: center;
        width: 100%;
        padding: 0 0 10px 0;
    }

    .funnel-shape {
        height: 60px;
    }

    .contact-wrapper {
        padding: 30px;
    }

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