/* ===========================
   Design Tokens
   =========================== */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a2e;
    --blue-royal: #2563eb;
    --blue-cyan: #06b6d4;
    --gold: #f59e0b;
    --gold-hover: #d97706;
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --gradient-blue: linear-gradient(135deg, var(--blue-royal), var(--blue-cyan));
}

/* ===========================
   Reset & Base
   =========================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===========================
   Utility Classes
   =========================== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: var(--gold-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.btn-ghost {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid transparent;
    background-image: linear-gradient(var(--bg-primary), var(--bg-primary)), var(--gradient-blue);
    background-origin: border-box;
    background-clip: padding-box, border-box;
}

.btn-ghost:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(6, 182, 212, 0.2);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    text-align: center;
}

/* ===========================
   Animations
   =========================== */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes float {
    0%   { transform: translateY(0px); }
    50%  { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

@keyframes pulse-glow {
    0%   { opacity: 0.4; transform: scale(1); }
    50%  { opacity: 0.6; transform: scale(1.05); }
    100% { opacity: 0.4; transform: scale(1); }
}

/* ===========================
   Header
   =========================== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: all 0.3s ease;
    background: transparent;
}

header.scrolled {
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

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

.logo {
    text-decoration: none;
    display: flex;
    align-items: center;
}

.logo-img {
    height: 50px;
    width: auto;
    display: block;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--blue-cyan);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-blue);
    transition: width 0.3s ease;
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

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

.hero-bg-orbs {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    animation: pulse-glow 8s infinite alternate;
}

.orb-1 {
    top: 20%;
    left: 10%;
    width: 400px;
    height: 400px;
    background: rgba(37, 99, 235, 0.15);
}

.orb-2 {
    bottom: 10%;
    right: 10%;
    width: 500px;
    height: 500px;
    background: rgba(6, 182, 212, 0.15);
    animation-delay: -4s;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-text p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 4rem;
}

.hero-buttons .arrow {
    margin-left: 0.5rem;
    transition: transform 0.3s;
}

.btn-primary:hover .arrow {
    transform: translateX(4px);
}

.hero-graphic {
    animation: float 6s ease-in-out infinite;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-logo {
    width: 100%;
    max-width: 500px;
    height: auto;
    filter: drop-shadow(0 0 30px rgba(37, 99, 235, 0.2));
}

/* ===========================
   Stats Bar
   =========================== */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    background: rgba(26, 26, 46, 0.6);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 2rem;
    margin-top: 2rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.5rem;
    background: var(--gradient-blue);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ===========================
   About Section
   =========================== */
.about {
    padding: 8rem 0;
    background: var(--bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
}

.about-text h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.about-text p {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.about-graphic {
    display: flex;
    justify-content: center;
}

/* ===========================
   Services Section
   =========================== */
.services {
    padding: 8rem 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    position: relative;
    transition: transform 0.3s, box-shadow 0.3s;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-blue);
    border-top-left-radius: 16px;
    border-top-right-radius: 16px;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.service-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--text-secondary);
}

/* ===========================
   CTA Banner
   =========================== */
.cta-banner {
    background: var(--gradient-blue);
    padding: 6rem 0;
    text-align: center;
}

.cta-banner h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: white;
}

.btn-cta {
    background: var(--gold);
    color: #000;
    font-size: 1.25rem;
    padding: 1rem 2.5rem;
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.4);
}

.btn-cta:hover {
    background: var(--gold-hover);
    box-shadow: 0 0 30px rgba(245, 158, 11, 0.6);
}

/* ===========================
   Contact Section
   =========================== */
.contact {
    padding: 8rem 0;
    background: var(--bg-secondary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.contact-info p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1.125rem;
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-icon {
    width: 24px;
    height: 24px;
    color: var(--blue-cyan);
}

.contact-form {
    background: var(--bg-primary);
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

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

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: white;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-input:focus {
    outline: none;
    border-color: var(--blue-cyan);
}

textarea.form-input {
    resize: vertical;
    min-height: 120px;
}

.btn-submit {
    width: 100%;
    background: var(--gradient-blue);
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.3s;
}

.btn-submit:hover {
    opacity: 0.9;
}

.form-success {
    display: none;
    color: #10b981;
    margin-top: 1rem;
    text-align: center;
    font-weight: 500;
}

.form-error {
    display: none;
    color: #ef4444;
    margin-top: 1rem;
    text-align: center;
    font-weight: 500;
}

.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ===========================
   Footer
   =========================== */
footer {
    background: #000;
    padding: 4rem 0 2rem;
    border-top: 1px solid;
    border-image: var(--gradient-blue) 1;
}

.footer-content {
    text-align: center;
}

.footer-logo {
    margin-bottom: 2rem;
    display: inline-block;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    color: var(--text-secondary);
    font-size: 0.875rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* ===========================
   Responsive — Tablet
   =========================== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text p {
        margin: 0 auto 2.5rem;
    }

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

    .hero-graphic {
        display: none;
    }

    .stats-bar {
        grid-template-columns: repeat(3, 1fr);
    }

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

/* ===========================
   Responsive — Mobile
   =========================== */
@media (max-width: 768px) {
    .nav-links {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--bg-secondary);
        padding: 6rem 2rem 2rem;
        transition: right 0.3s ease;
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.5);
    }

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

    .mobile-menu-btn {
        display: block;
        z-index: 1001;
    }

    .mobile-menu-btn svg {
        width: 24px;
        height: 24px;
        fill: currentColor;
    }

    .stats-bar {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .contact-form {
        padding: 1.5rem;
    }
}