/* =========================================
   Felicitous Technologies - Stylesheet
   ========================================= */

/* CSS Custom Properties */
:root {
    /* Colors - Professional Blue/Teal Palette */
    --color-primary: #0f766e;
    --color-primary-dark: #0d5d57;
    --color-primary-light: #14b8a6;
    --color-accent: #0ea5e9;
    --color-warm: #f59e0b;
    
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-text-muted: #94a3b8;
    
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-bg-dark: #0f172a;
    
    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    /* Layout */
    --container-max: 1200px;
    --container-padding: 1.5rem;
    
    /* Shadows */
    --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-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 5rem;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

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

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-text);
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: 0.75rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 600px;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient--warm {
    background: linear-gradient(135deg, #fbbf24 0%, var(--color-warm) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.highlight {
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--color-primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    white-space: nowrap;
}

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

.btn--primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

.btn--large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* =========================================
   Header / Navigation
   ========================================= */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border-light);
    transition: box-shadow var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4.5rem;
}

.nav__logo {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-xs);
    font-size: 1.25rem;
    font-weight: 600;
}

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

.logo-accent {
    color: var(--color-primary);
    font-weight: 500;
}

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

.nav__link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-light);
    transition: color var(--transition-fast);
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-base);
}

.nav__link:hover {
    color: var(--color-primary);
}

.nav__link:hover::after,
.nav__link.active::after {
    width: 100%;
}

.nav__link.active::after {
    background: var(--color-warm);
}

.nav__link.active {
    color: var(--color-primary);
}

.nav__link--cta {
    background: var(--color-primary);
    color: white !important;
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-md);
}

.nav__link--cta::after {
    display: none;
}

.nav__link--cta:hover {
    background: var(--color-primary-dark);
}

.nav__toggle {
    display: none;
    width: 2rem;
    height: 2rem;
    position: relative;
}

.hamburger,
.hamburger::before,
.hamburger::after {
    width: 1.5rem;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-base);
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.hamburger {
    top: 50%;
    transform: translate(-50%, -50%);
}

.hamburger::before,
.hamburger::after {
    content: '';
}

.hamburger::before {
    top: -6px;
}

.hamburger::after {
    top: 6px;
}

/* Mobile Menu Open State */
.nav__toggle.active .hamburger {
    background: transparent;
}

.nav__toggle.active .hamburger::before {
    top: 0;
    transform: translateX(-50%) rotate(45deg);
}

.nav__toggle.active .hamburger::after {
    top: 0;
    transform: translateX(-50%) rotate(-45deg);
}

/* =========================================
   Hero Section
   ========================================= */
.hero {
    padding-top: calc(4.5rem + var(--spacing-3xl));
    padding-bottom: 0;
    background: var(--color-bg-dark);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

/* Animated mesh gradient orbs */
.hero__bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;
}

.hero__orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
}

.hero__orb--1 {
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(15, 118, 110, 0.4) 0%, transparent 65%);
    top: -250px;
    right: -150px;
    animation: heroOrb1 10s ease-in-out infinite;
}

.hero__orb--2 {
    width: 550px;
    height: 550px;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.28) 0%, transparent 65%);
    bottom: -150px;
    left: -100px;
    animation: heroOrb2 12s ease-in-out infinite;
}

.hero__orb--3 {
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, rgba(20, 184, 166, 0.22) 0%, transparent 65%);
    top: 45%;
    left: 35%;
    transform: translate(-50%, -50%);
    animation: heroOrb3 8s ease-in-out infinite;
}

@keyframes heroOrb1 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-40px, 30px); }
}

@keyframes heroOrb2 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(30px, -40px); }
}

@keyframes heroOrb3 {
    0%, 100% { transform: translate(-50%, -50%) scale(1); }
    50% { transform: translate(-50%, -50%) scale(1.15); }
}

/* Two-column hero layout */
.hero__container {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: var(--spacing-3xl);
    text-align: left;
    position: relative;
    z-index: 1;
    padding-top: var(--spacing-3xl);
    padding-bottom: var(--spacing-3xl);
}

/* Company name — small label above the definition */
.hero__company-label {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-xs);
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: var(--spacing-xl);
}

.hero__company-label .logo-text {
    color: rgba(255, 255, 255, 0.75);
}

.hero__company-label .logo-accent {
    color: var(--color-primary-light);
    opacity: 1;
}

/* Dictionary definition — the visual anchor */
.hero__definition {
    margin-bottom: var(--spacing-2xl);
}

.hero__word {
    display: block;
    font-family: var(--font-display);
    font-style: italic;
    font-size: clamp(2.25rem, 4.5vw, 3.75rem);
    color: white;
    line-height: 1.1;
    margin-bottom: var(--spacing-sm);
}

.hero__pos {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.4);
    margin-right: 0.25rem;
}

.hero__meaning {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.6;
}

/* Main hero headline */
.hero__title {
    font-size: clamp(2.25rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    color: white;
    margin-bottom: var(--spacing-lg);
}

.hero__description {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
    max-width: none;
    margin-left: 0;
    margin-right: 0;
}

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

/* CTA buttons — dark background variants */
.btn--hero-primary {
    background: white;
    color: var(--color-text);
}

.btn--hero-primary:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

.btn--hero-outline {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.35);
}

.btn--hero-outline:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.65);
    transform: translateY(-2px);
}

/* Decorative SVG panel */
.hero__visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero__visual svg {
    width: 100%;
    max-width: 440px;
    height: auto;
}

/* Wave divider — transitions from dark navy to services white */
.hero__wave {
    position: relative;
    z-index: 1;
    line-height: 0;
    display: block;
}

.hero__wave svg {
    width: 100%;
    height: 80px;
    display: block;
}

/* =========================================
   Services Section
   ========================================= */
.services {
    padding: var(--spacing-4xl) 0;
    background: var(--color-bg);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

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

.service-card__icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: var(--radius-lg);
    color: white;
    margin-bottom: var(--spacing-lg);
}

/* Per-card icon color differentiation */
.service-card__icon--ux {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
}

.service-card__icon--hf {
    background: linear-gradient(135deg, #1d4ed8 0%, #3b82f6 100%);
}

.service-card__icon--dev {
    background: linear-gradient(135deg, #4338ca 0%, #6366f1 100%);
}

.service-card__icon--psych {
    background: linear-gradient(135deg, #0e7490 0%, #0891b2 100%);
}

.service-card__title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.service-card__description {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    font-size: 0.9375rem;
}

.service-card__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.service-card__list li {
    font-size: 0.875rem;
    color: var(--color-text-light);
    padding-left: var(--spacing-lg);
    position: relative;
}

.service-card__list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5em;
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
}

/* =========================================
   Products Section
   ========================================= */
.products {
    padding: calc(var(--spacing-4xl) + 3rem) 0;
    background: linear-gradient(135deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
    clip-path: polygon(0 0, 100% 3%, 100% 100%, 0 97%);
    margin-top: -2rem;
    margin-bottom: -2rem;
    position: relative;
    z-index: 1;
}

.products__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.product-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    display: flex;
    gap: var(--spacing-xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-accent) 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.product-card:hover::before {
    opacity: 1;
}

.product-card__icon {
    flex-shrink: 0;
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: var(--radius-lg);
    color: white;
}

.product-card__content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-card__title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.product-card__tagline {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-md);
}

.product-card__description {
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
    flex-grow: 1;
}

.product-card__link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 500;
    color: var(--color-primary);
    transition: all var(--transition-fast);
}

.product-card__link:hover {
    color: var(--color-warm);
    gap: var(--spacing-md);
}

.product-card__link svg {
    transition: transform var(--transition-fast);
}

.product-card__link:hover svg {
    transform: translate(2px, -2px);
}

/* Products Responsive */
@media (max-width: 768px) {
    .products__grid {
        grid-template-columns: 1fr;
    }
    
    .product-card {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
    
    .product-card__link {
        justify-content: center;
    }
}

/* =========================================
   About Section
   ========================================= */
.about {
    padding: var(--spacing-4xl) 0;
    background: var(--color-bg-alt);
}

.about__content {
    max-width: 680px;
}

.about__text {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

.about__features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.feature {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.feature__icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-primary);
}

.feature__content h4 {
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
}

.feature__content p {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

/* Stats Banner */
.stats-banner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-3xl);
    margin-top: var(--spacing-3xl);
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.stats-banner__divider {
    width: 1px;
    height: 64px;
    background: var(--color-border);
    flex-shrink: 0;
}

.stats-banner .stat {
    text-align: center;
    background: none;
    border: none;
    padding: 0;
}

.stats-banner .stat:hover {
    border-color: transparent;
    box-shadow: none;
    transform: none;
}

.stat__number {
    display: block;
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.stat__label {
    font-size: 0.875rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 500;
}

/* =========================================
   Contact Section
   ========================================= */
.contact {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, #1a2744 100%);
    color: white;
}

.contact__container {
    text-align: center;
    max-width: 700px;
}

.contact__title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    color: white;
    margin-bottom: var(--spacing-lg);
}

.contact__text {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-xl);
}

.contact .btn--primary {
    background: var(--color-primary-light);
}

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

/* =========================================
   Footer
   ========================================= */
.footer {
    padding: var(--spacing-2xl) 0;
    background: var(--color-bg-dark);
    color: rgba(255, 255, 255, 0.7);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__container {
    text-align: center;
}

.footer__brand {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.footer__brand .logo-text {
    color: white;
}

.footer__brand .logo-accent {
    color: var(--color-primary-light);
}

.footer__tagline {
    font-size: 0.875rem;
    margin-bottom: var(--spacing-lg);
}

.footer__links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.footer__links a {
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.footer__links a:hover {
    color: var(--color-primary-light);
}

.footer__copyright {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.5);
}

/* =========================================
   Animations (Scroll Reveal)
   ========================================= */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* =========================================
   Responsive Design
   ========================================= */

/* Tablet (768px) */
@media (max-width: 768px) {
    :root {
        --container-padding: 1.25rem;
    }
    
    /* Navigation */
    .nav__menu {
        position: fixed;
        top: 4.5rem;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: var(--spacing-xl);
        gap: var(--spacing-lg);
        border-bottom: 1px solid var(--color-border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }
    
    .nav__menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav__toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .nav__link--cta {
        width: 100%;
        text-align: center;
    }
    
    /* Hero */
    .hero__container {
        grid-template-columns: 1fr;
        text-align: center;
        padding-top: var(--spacing-2xl);
        padding-bottom: var(--spacing-2xl);
    }

    .hero__visual {
        display: none;
    }

    .hero__company-label,
    .hero__actions {
        justify-content: center;
    }

    .hero__definition {
        text-align: center;
    }

    .hero__actions {
        flex-direction: column;
        width: 100%;
    }
    
    .hero__actions .btn {
        width: 100%;
    }

    /* Stats banner */
    .stats-banner {
        gap: var(--spacing-xl);
    }
}

/* Mobile (480px) */
@media (max-width: 480px) {
    .hero__actions {
        flex-direction: column;
        width: 100%;
    }
    
    .hero__actions .btn {
        width: 100%;
    }
    
    .services__grid {
        grid-template-columns: 1fr;
    }

    .stats-banner {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .stats-banner__divider {
        width: 60px;
        height: 1px;
    }
    
    .footer__links {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}