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

:root {
    --bg-primary: #08081a;
    --bg-secondary: #0d0d22;
    --bg-card: #12122a;
    --bg-card-hover: #181838;
    --border-color: rgba(140, 100, 255, 0.08);
    --text-primary: #ffffff;
    --text-secondary: #b0a8d0;
    --text-muted: #6e6494;
    --accent-primary: #8b5cf6;
    --accent-secondary: #a78bfa;
    --accent-tertiary: #c084fc;
    --gradient-primary: linear-gradient(135deg, #7c3aed, #a855f7, #c084fc);
    --gradient-bg: linear-gradient(135deg, rgba(139, 92, 246, 0.12), rgba(168, 85, 247, 0.08));
    --gradient-glow: linear-gradient(135deg, rgba(139, 92, 246, 0.25), rgba(192, 132, 252, 0.15));
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 40px rgba(139, 92, 246, 0.25);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --container-width: 1200px;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

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

ul {
    list-style: none;
}

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

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: var(--radius-xl);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    font-family: var(--font-main);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #a855f7, #c084fc);
    opacity: 0;
    transition: var(--transition);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-primary span,
.btn-primary i {
    position: relative;
    z-index: 1;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(139, 92, 246, 0.4);
}

.btn-outline {
    border: 1.5px solid rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
    background: transparent;
}

.btn-outline:hover {
    border-color: var(--accent-primary);
    background: rgba(139, 92, 246, 0.1);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 18px 40px;
    font-size: 1.05rem;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ============================================
   HEADER / NAV
   ============================================ */
#header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

#header.scrolled {
    padding: 12px 0;
    background: rgba(8, 8, 26, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 70px;
    width: auto;
    object-fit: contain;
    filter: brightness(0) invert(1);
    transition: var(--transition);
}

.logo:hover .logo-img {
    filter: brightness(0) invert(1) drop-shadow(0 0 10px rgba(139, 92, 246, 0.5));
}

#header.scrolled .logo-img {
    height: 48px;
}

.footer .logo-img {
    height: 50px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

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

.nav-cta {
    background: var(--gradient-primary);
    padding: 10px 24px !important;
    border-radius: var(--radius-xl);
    color: white !important;
}

.nav-cta::after {
    display: none !important;
}

.nav-cta:hover {
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4);
    transform: translateY(-1px);
}

/* Language Switcher */
.lang-switcher {
    position: relative;
    z-index: 1002;
}

.lang-current {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: rgba(139, 92, 246, 0.08);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    cursor: pointer;
    font-family: var(--font-main);
    font-size: 0.82rem;
    font-weight: 600;
    transition: var(--transition);
}

.lang-current:hover {
    border-color: var(--accent-primary);
    background: rgba(139, 92, 246, 0.15);
}

.lang-current .fi {
    font-size: 1rem;
    border-radius: 2px;
}

.lang-current i.fas {
    font-size: 0.6rem;
    color: var(--text-muted);
    transition: var(--transition);
}

.lang-switcher.open .lang-current i.fas {
    transform: rotate(180deg);
}

.lang-code {
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 6px;
    min-width: 160px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}

.lang-switcher.open .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px 14px;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-family: var(--font-main);
    font-size: 0.88rem;
    font-weight: 500;
    border-radius: 6px;
    transition: var(--transition);
}

.lang-option:hover {
    background: rgba(139, 92, 246, 0.1);
    color: var(--text-primary);
}

.lang-option.active {
    color: var(--accent-primary);
    background: rgba(139, 92, 246, 0.08);
}

.lang-option .fi {
    font-size: 1.1rem;
    border-radius: 2px;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 1001;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
    border-radius: 2px;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   HERO
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 120px 24px 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

#heroCanvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0.4;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 50% at 20% 50%, rgba(139, 92, 246, 0.1) 0%, transparent 70%),
        radial-gradient(ellipse 50% 40% at 80% 30%, rgba(168, 85, 247, 0.07) 0%, transparent 70%),
        linear-gradient(180deg, transparent 0%, var(--bg-primary) 100%);
}

/* 3D Glass Sphere - Centered behind text */
.hero-sphere {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 0;
    pointer-events: none;
}

.sphere {
    width: 550px;
    height: 550px;
    position: relative;
    border-radius: 50%;
    background:
        radial-gradient(circle at 30% 35%, rgba(192, 132, 252, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 70% 60%, rgba(99, 60, 200, 0.35) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(139, 92, 246, 0.2) 0%, transparent 70%);
    animation: sphereRotate 20s linear infinite;
}

.sphere-inner {
    position: absolute;
    inset: 10%;
    border-radius: 50%;
    background:
        radial-gradient(circle at 35% 30%, rgba(192, 132, 252, 0.25) 0%, transparent 60%),
        radial-gradient(circle at 65% 70%, rgba(79, 25, 200, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 50% 40%, rgba(168, 85, 247, 0.15) 0%, transparent 40%);
    filter: blur(3px);
    animation: sphereInnerRotate 15s linear infinite reverse;
}

.sphere-ring {
    position: absolute;
    inset: -5%;
    border-radius: 50%;
    border: 1.5px solid rgba(168, 85, 247, 0.2);
}

.sphere-ring-1 {
    transform: rotateX(70deg) rotateZ(0deg);
    animation: ringOrbit1 10s linear infinite;
}

.sphere-ring-2 {
    inset: -10%;
    transform: rotateX(55deg) rotateZ(60deg);
    border-color: rgba(192, 132, 252, 0.12);
    animation: ringOrbit2 14s linear infinite;
}

.sphere-ring-3 {
    inset: -2%;
    transform: rotateY(70deg) rotateZ(30deg);
    border-color: rgba(139, 92, 246, 0.15);
    animation: ringOrbit3 12s linear infinite;
}

.sphere-glow {
    position: absolute;
    inset: -30%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.12) 0%, rgba(168, 85, 247, 0.05) 40%, transparent 65%);
    filter: blur(50px);
    animation: glowPulse 4s ease-in-out infinite;
}

@keyframes sphereRotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes sphereInnerRotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes ringOrbit1 {
    from { transform: rotateX(70deg) rotateZ(0deg); }
    to { transform: rotateX(70deg) rotateZ(360deg); }
}

@keyframes ringOrbit2 {
    from { transform: rotateX(55deg) rotateZ(60deg); }
    to { transform: rotateX(55deg) rotateZ(420deg); }
}

@keyframes ringOrbit3 {
    from { transform: rotateY(70deg) rotateZ(30deg); }
    to { transform: rotateY(70deg) rotateZ(390deg); }
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.7; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.05); }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 820px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.25);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--accent-tertiary);
    margin-bottom: 28px;
    animation: fadeInDown 0.8s ease-out;
}

.hero-badge i {
    font-size: 0.75rem;
}

.hero h1 {
    font-size: clamp(2.4rem, 5.5vw, 4rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    animation: fadeInUp 0.8s ease-out 0.1s both;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.15rem);
    color: var(--text-secondary);
    max-width: 620px;
    margin: 0 auto 36px;
    line-height: 1.7;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 60px;
    animation: fadeInUp 0.8s ease-out 0.3s both;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-suffix {
    font-size: 1.4rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-color);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    animation: fadeInUp 1s ease-out 0.6s both;
}

.mouse {
    width: 26px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 14px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
}

.wheel {
    width: 3px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 3px;
    animation: scrollWheel 2s infinite;
}

.scroll-indicator span {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* ============================================
   SECTIONS COMMON
   ============================================ */
.section-header {
    text-align: center;
    max-width: 650px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--accent-primary);
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-description {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.7;
}

/* ============================================
   ABOUT
   ============================================ */
.about {
    padding: 120px 0;
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.about-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
}

.about-card:hover {
    border-color: rgba(139, 92, 246, 0.2);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

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

.about-card-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-bg);
    border-radius: var(--radius-md);
    font-size: 1.3rem;
    color: var(--accent-primary);
    margin-bottom: 20px;
}

.about-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.about-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ============================================
   SERVICES
   ============================================ */
.services {
    padding: 120px 0;
    background: var(--bg-secondary);
    position: relative;
}

.services::before,
.services::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.services::before { top: 0; }
.services::after { bottom: 0; }

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card-glow {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.15) 0%, transparent 70%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
}

.service-card:hover .service-card-glow {
    opacity: 1;
}

.service-card:hover {
    border-color: rgba(139, 92, 246, 0.2);
    transform: translateY(-6px);
    box-shadow: var(--shadow-glow);
}

.service-card.featured {
    border-color: rgba(139, 92, 246, 0.3);
    background: linear-gradient(180deg, rgba(124, 58, 237, 0.05) 0%, var(--bg-card) 100%);
}

.service-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--gradient-primary);
    color: white;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 4px 14px;
    border-radius: 100px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.service-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-bg);
    border-radius: var(--radius-md);
    font-size: 1.6rem;
    color: var(--accent-primary);
    margin-bottom: 24px;
}

.service-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.service-card > p {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 24px;
}

.service-features {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 28px;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.service-features li i {
    color: var(--accent-secondary);
    font-size: 0.75rem;
}

.service-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent-primary);
}

.service-cta:hover {
    gap: 14px;
    color: var(--accent-secondary);
}

/* ============================================
   AI DETAIL
   ============================================ */
.ai-detail {
    padding: 120px 0;
    position: relative;
}

.ai-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.ai-detail-content h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.4rem);
    font-weight: 800;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.ai-detail-content > p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 36px;
}

.ai-capabilities {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.ai-cap {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.ai-cap-icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-bg);
    border-radius: var(--radius-sm);
    color: var(--accent-primary);
    font-size: 1rem;
}

.ai-cap h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.ai-cap p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Chat Demo */
.ai-chat-demo {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.chat-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--bg-card-hover);
    border-bottom: 1px solid var(--border-color);
}

.chat-avatar {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 50%;
    font-size: 1rem;
}

.chat-name {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
}

.chat-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.status-dot {
    width: 7px;
    height: 7px;
    background: #22c55e;
    border-radius: 50%;
    display: inline-block;
    animation: pulse 2s infinite;
}

.chat-messages {
    padding: 24px 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.chat-msg {
    max-width: 80%;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-size: 0.88rem;
    line-height: 1.5;
}

.chat-msg.bot {
    background: var(--bg-card-hover);
    border: 1px solid var(--border-color);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

.chat-msg.user {
    background: var(--gradient-primary);
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

.chat-msg.typing {
    padding: 16px 20px;
}

.typing-dots {
    display: flex;
    gap: 4px;
}

.typing-dots span {
    width: 7px;
    height: 7px;
    background: var(--text-muted);
    border-radius: 50%;
    animation: typingDot 1.4s infinite;
}

.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }

/* ============================================
   METHODOLOGY
   ============================================ */
.methodology {
    padding: 120px 0;
    background: var(--bg-secondary);
    position: relative;
}

.methodology::before,
.methodology::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.methodology::before { top: 0; }
.methodology::after { bottom: 0; }

.methodology-timeline {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
}

.timeline-line {
    position: absolute;
    left: 28px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--accent-primary), var(--accent-secondary));
    opacity: 0.3;
}

.timeline-step {
    display: flex;
    gap: 28px;
    align-items: flex-start;
    padding: 28px 0;
    position: relative;
}

.step-number {
    width: 56px;
    min-width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 2px solid rgba(139, 92, 246, 0.3);
    border-radius: 50%;
    font-size: 0.9rem;
    font-weight: 800;
    color: var(--accent-primary);
    z-index: 1;
    transition: var(--transition);
}

.timeline-step:hover .step-number {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.4);
}

.step-content h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 6px;
    margin-top: 4px;
}

.step-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
    padding: 100px 0;
}

.cta-box {
    text-align: center;
    padding: 80px 40px;
    background: var(--gradient-bg);
    border: 1px solid rgba(124, 58, 237, 0.15);
    border-radius: var(--radius-xl);
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(124, 58, 237, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 70% 50%, rgba(6, 182, 212, 0.06) 0%, transparent 50%);
    animation: rotateSlow 20s linear infinite;
}

.cta-box h2 {
    font-size: clamp(1.6rem, 3.5vw, 2.4rem);
    font-weight: 800;
    margin-bottom: 16px;
    position: relative;
    letter-spacing: -0.02em;
}

.cta-box p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 32px;
    position: relative;
}

.cta-box .btn {
    position: relative;
}

/* ============================================
   FAQ
   ============================================ */
.faq {
    padding: 120px 0;
    background: var(--bg-secondary);
    position: relative;
}

.faq::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.faq-list {
    max-width: 750px;
    margin: 0 auto;
}

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

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 22px 0;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-main);
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--accent-primary);
}

.faq-question i {
    font-size: 0.85rem;
    color: var(--accent-primary);
    transition: var(--transition);
    min-width: 20px;
    text-align: center;
}

.faq-item.active .faq-question i {
    transform: rotate(45deg);
}

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

.faq-item.active .faq-answer {
    max-height: 200px;
    padding-bottom: 22px;
}

.faq-answer p {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   CONTACT
   ============================================ */
.contact {
    padding: 120px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-info h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.4rem);
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.contact-info > p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 36px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.contact-method:hover {
    border-color: rgba(139, 92, 246, 0.2);
    transform: translateX(4px);
}

.contact-method-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-bg);
    border-radius: var(--radius-sm);
    color: var(--accent-primary);
    font-size: 1.1rem;
}

.contact-method-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.contact-method-value {
    display: block;
    font-weight: 500;
    font-size: 0.95rem;
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-main);
    font-size: 0.92rem;
    transition: var(--transition);
    outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group select {
    cursor: pointer;
    color: var(--text-muted);
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b6b80' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.form-group select option {
    background: var(--bg-card);
    color: var(--text-primary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

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

/* Form Status Message */
.form-status {
    text-align: center;
    padding: 0;
    margin-top: 0;
    font-size: 0.92rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    transition: all 0.4s ease;
}

.form-status.success,
.form-status.error {
    padding: 14px 18px;
    margin-top: 16px;
    max-height: 80px;
    opacity: 1;
}

.form-status.success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.25);
    color: #4ade80;
}

.form-status.error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.25);
    color: #f87171;
}

.form-status i {
    margin-right: 8px;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    padding: 60px 0 30px;
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border-color);
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.88rem;
    margin-top: 16px;
    line-height: 1.6;
}

.footer-links h4,
.footer-social h4 {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    font-size: 0.88rem;
    color: var(--text-secondary);
}

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

.footer-contact ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-contact li,
.footer-contact a {
    font-size: 0.88rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-contact a:hover {
    color: var(--accent-primary);
}

.footer-contact i {
    width: 16px;
    text-align: center;
    color: var(--accent-primary);
}

.footer-bottom {
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.82rem;
    color: var(--text-muted);
}

/* ============================================
   WHATSAPP FLOAT
   ============================================ */
.whatsapp-float {
    position: fixed;
    bottom: 28px;
    right: 28px;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #25D366;
    border-radius: 50%;
    font-size: 1.6rem;
    color: white;
    z-index: 999;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    transition: var(--transition);
    animation: fadeInUp 1s ease-out 1s both;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(37, 211, 102, 0.5);
}

.whatsapp-tooltip {
    position: absolute;
    right: 70px;
    background: var(--bg-card);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.whatsapp-float:hover .whatsapp-tooltip {
    opacity: 1;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes scrollWheel {
    0% { opacity: 1; transform: translateY(0); }
    100% { opacity: 0; transform: translateY(12px); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes typingDot {
    0%, 60%, 100% { opacity: 0.3; transform: translateY(0); }
    30% { opacity: 1; transform: translateY(-4px); }
}

@keyframes rotateSlow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Reveal Animation */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .services-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    .ai-detail-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--bg-secondary);
        flex-direction: column;
        justify-content: center;
        gap: 24px;
        padding: 40px;
        border-left: 1px solid var(--border-color);
        transition: var(--transition);
    }

    .nav-links.active {
        right: 0;
    }

    .menu-toggle {
        display: flex;
    }

    .hero {
        padding: 100px 24px 60px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .stat-divider {
        width: 40px;
        height: 1px;
    }

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

    .about, .services, .ai-detail,
    .methodology, .cta-section, .faq, .contact {
        padding: 80px 0;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .cta-box {
        padding: 50px 24px;
    }

    .contact-form-wrapper {
        padding: 28px;
    }

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

    .scroll-indicator {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.88rem;
    }

    .btn-lg {
        padding: 14px 28px;
    }
}