/* ==========================================================================
   Design System: Tech Blue (Rheewel)
   Variables & Reset
   ========================================================================== */

:root {
    /* Colors */
    --clr-primary: #0F172A;
    /* Deep Navy */
    --clr-secondary: #334155;
    /* Slate */
    --clr-accent: #208fda;
    /* Bright Tech Blue */
    --clr-accent-hover: #1972ad;
    --clr-bg: #F8FAFC;
    --clr-bg-white: #FFFFFF;
    --clr-text: #020617;
    --clr-text-muted: #475569;
    --clr-border: #E2E8F0;

    /* Typography */
    --ff-heading: 'Space Grotesk', sans-serif;
    --ff-body: 'DM Sans', sans-serif;

    --fw-light: 300;
    --fw-regular: 400;
    --fw-medium: 500;
    --fw-semibold: 600;
    --fw-bold: 700;

    /* Styling */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-glow: 0 0 20px rgba(32, 143, 218, 0.4);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--ff-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--clr-text);
    background-color: var(--clr-bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--ff-heading);
    color: var(--clr-primary);
    line-height: 1.2;
    margin-bottom: 1rem;
}

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

a:hover,
a:focus {
    color: var(--clr-accent);
}

ul {
    list-style: none;
}

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

/* ==========================================================================
   Layout Containers
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.container-sm {
    max-width: 900px;
}

.section {
    padding: 6rem 0;
}

.section-sm {
    padding: 3rem 0;
}

.bg-light {
    background-color: var(--clr-bg-white);
}

.bg-primary {
    background-color: var(--clr-primary);
    color: var(--clr-bg);
}

.center {
    text-align: center;
}

/* ==========================================================================
   Typography Utilities
   ========================================================================== */
.accent {
    color: var(--clr-accent);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: var(--fw-bold);
    margin-bottom: 1rem;
}

.section-subtitle {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: var(--fw-semibold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--clr-accent);
    margin-bottom: 0.5rem;
}

.section-header {
    margin-bottom: 4rem;
    max-width: 700px;
}

.section-header.center {
    margin-left: auto;
    margin-right: auto;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-family: var(--ff-heading);
    font-weight: var(--fw-medium);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
    text-align: center;
}

.btn-primary {
    background-color: var(--clr-accent);
    color: var(--clr-bg-white);
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--clr-accent-hover);
    color: var(--clr-bg-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--clr-bg-white);
    color: var(--clr-bg-white);
}

.btn-outline:hover,
.btn-outline:focus {
    background-color: var(--clr-bg-white);
    color: var(--clr-primary);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: all var(--transition-normal);
    padding: 1.5rem 0;
}

.header.scrolled {
    background-color: var(--clr-primary);
    padding: 1rem 0;
    box-shadow: var(--shadow-md);
}

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

.logo-text {
    font-family: var(--ff-heading);
    font-size: 1.5rem;
    font-weight: var(--fw-bold);
    color: var(--clr-bg-white);
}

.nav-list {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: rgba(255, 255, 255, 0.8);
    font-weight: var(--fw-medium);
    position: relative;
}

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

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

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

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--clr-bg-white);
    cursor: pointer;
}

@media (max-width: 900px) {
    .nav-list {
        display: none;
    }

    /* Mobile menu JS logic later */
    .header .btn {
        display: none;
    }

    .mobile-toggle {
        display: block;
    }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    color: var(--clr-bg-white);
    padding-top: 5rem;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-color: var(--clr-primary);
    /* Image placeholder or subtle gradient */
    background-image: radial-gradient(circle at top right, var(--clr-secondary), var(--clr-primary));
    z-index: -1;
}

.hero-container {
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 800px;
}

.hero .subtitle {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
}

.hero .title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    color: var(--clr-bg-white);
    margin-bottom: 1.5rem;
}

.hero .description {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2.5rem;
    max-width: 700px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ==========================================================================
   Metrics Section (Counters)
   ========================================================================== */
.metrics {
    background-color: var(--clr-primary);
    padding-bottom: 4rem;
}

.metrics-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 4rem;
}

.metric-item {
    text-align: center;
    color: var(--clr-bg-white);
}

.metric-number {
    font-size: 3rem;
    font-weight: var(--fw-bold);
    color: var(--clr-accent);
    margin-bottom: 0.5rem;
}

.metric-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    color: var(--clr-text-muted);
    margin-bottom: 1rem;
}

.image-placeholder {
    width: 100%;
    aspect-ratio: 4/3;
    background-color: var(--clr-secondary);
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
}

.abstract-shape {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(202, 138, 4, 0.2), transparent);
}

@media (max-width: 768px) {
    .about-container {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   Expertises Cards (RTS/RPS)
   ========================================================================== */
.expertises-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.expertise-card {
    background-color: var(--clr-bg);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-md);
    padding: 3rem 2rem;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.expertise-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background-color: var(--clr-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.expertise-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.expertise-card:hover::before {
    transform: scaleX(1);
}

.card-icon {
    width: 64px;
    height: 64px;
    background-color: rgba(32, 143, 218, 0.1);
    color: var(--clr-accent);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
}

.card-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.card-desc {
    color: var(--clr-text-muted);
    margin-bottom: 2rem;
}

.card-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.card-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    color: var(--clr-secondary);
    font-size: 0.9375rem;
}

.check-icon {
    width: 20px;
    height: 20px;
    color: var(--clr-accent);
    flex-shrink: 0;
    margin-top: 2px;
}

/* ==========================================================================
   Philosophy
   ========================================================================== */
.philosophy {
    background-color: var(--clr-primary);
    color: var(--clr-bg-white);
}

.quote-icon {
    color: var(--clr-accent);
    opacity: 0.5;
    margin-bottom: 1.5rem;
}

.quote-text {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: var(--fw-light);
    color: var(--clr-bg-white);
    line-height: 1.4;
    max-width: 900px;
    margin: 0 auto;
}

/* ==========================================================================
   Clients Marquee (Infinite Scroll)
   ========================================================================== */
.marquee-container {
    padding: 2rem 0;
    mask-image: linear-gradient(to right, transparent, black 5%, black 95%, transparent);
    -webkit-mask-image: linear-gradient(to right, transparent, black 5%, black 95%, transparent);
}

.marquee-track {
    display: inline-flex;
    gap: 4rem;
    animation: scroll 40s linear infinite;
    align-items: center;
}

.marquee-track:hover {
    animation-play-state: paused;
}

.marquee-logo {
    flex-shrink: 0;
}

.marquee-logo img {
    height: 50px;
    width: auto;
    object-fit: contain;
    filter: grayscale(100%) opacity(0.6);
    transition: all var(--transition-normal);
}

.marquee-logo img:hover {
    filter: grayscale(0%) opacity(1);
    transform: scale(1.1);
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(calc(-50% - 2rem));
        /* -50% minus half the gap */
    }
}

/* ==========================================================================
   Clients Carousel (Simple Flex for now)
   ========================================================================== */
.clients-title {
    text-align: center;
    color: var(--clr-text-muted);
    font-size: 0.875rem;
    font-weight: var(--fw-semibold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 2rem;
}

.clients-track {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 3rem;
    opacity: 0.6;
}

.client-logo {
    font-family: var(--ff-heading);
    font-weight: var(--fw-bold);
    color: var(--clr-secondary);
    filter: grayscale(100%);
    transition: all var(--transition-fast);
}

.client-logo:hover {
    filter: grayscale(0%);
    opacity: 1;
    color: var(--clr-primary);
}

/* ==========================================================================
   Contact Section & Forms
   ========================================================================== */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info p {
    color: var(--clr-text-muted);
    margin-bottom: 2rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--clr-primary);
    font-weight: var(--fw-medium);
}

.contact-item svg {
    color: var(--clr-accent);
}

.contact-form {
    background-color: var(--clr-bg-white);
    padding: 2.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--clr-border);
}

.form-row {
    display: flex;
    gap: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
    width: 100%;
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: var(--fw-medium);
    margin-bottom: 0.5rem;
    color: var(--clr-secondary);
}

input[type="text"],
input[type="email"],
input[type="tel"],
select,
textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-sm);
    background-color: var(--clr-bg);
    color: var(--clr-text);
    font-family: var(--ff-body);
    transition: border-color var(--transition-fast);
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--clr-accent);
    box-shadow: 0 0 0 3px rgba(32, 143, 218, 0.1);
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.checkbox-group input {
    margin-top: 0.25rem;
}

.text-sm {
    font-size: 0.75rem;
    color: var(--clr-text-muted);
}

.hidden {
    display: none;
}

@media (max-width: 768px) {
    .contact-container {
        grid-template-columns: 1fr;
    }

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

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background-color: #020617;
    /* Darker than primary */
    color: rgba(255, 255, 255, 0.7);
    padding-top: 4rem;
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    padding-bottom: 3rem;
}

.footer-title {
    color: var(--clr-bg-white);
    font-family: var(--ff-body);
    font-weight: var(--fw-bold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.875rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
}

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

.footer-bottom {
    background-color: rgba(0, 0, 0, 0.5);
    padding: 1.5rem 0;
    text-align: center;
    font-size: 0.875rem;
}