:root {
    --primary: #2563eb;
    --primary-light: #60a5fa;
    --primary-dark: #1e40af;
    --secondary: #06b6d4;
    --accent: #f59e0b;
    --bg-dark: #020617;
    --bg-surface: rgba(15, 23, 42, 0.7);
    --bg-card: rgba(30, 41, 59, 0.6);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border: rgba(255, 255, 255, 0.08);
    --glass-blur: blur(16px);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Scroll Revel Animations */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

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

/* Stunning Ambient Background */
.ambient-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    background: #020617;
}

.ambient-blob {
    position: absolute;
    filter: blur(100px);
    border-radius: 50%;
    opacity: 0.5;
    animation: float 20s infinite alternate cubic-bezier(0.4, 0, 0.2, 1);
}

.blob-1 {
    top: -10%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: rgba(37, 99, 235, 0.2);
    animation-delay: 0s;
}

.blob-2 {
    bottom: -20%;
    right: -10%;
    width: 60vw;
    height: 60vw;
    background: rgba(6, 182, 212, 0.15);
    animation-delay: -5s;
}

.blob-3 {
    top: 40%;
    left: 50%;
    width: 40vw;
    height: 40vw;
    background: rgba(245, 158, 11, 0.05);
    transform: translateX(-50%);
    animation-delay: -10s;
}

@keyframes float {
    0% {
        transform: translate(0, 0) scale(1);
    }

    50% {
        transform: translate(5%, 10%) scale(1.1);
    }

    100% {
        transform: translate(-5%, -5%) scale(0.95);
    }
}

/* Typography & Utilities */
h1,
h2,
h3,
h4 {
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.text-gradient {
    background: linear-gradient(135deg, #ffffff 0%, #a5b4fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Navbar */
nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-surface);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border);
    transition: all 0.3s ease;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 800;
    color: white;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    font-size: 0.95rem;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--secondary);
    transition: width 0.3s ease;
}

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

.nav-links a:hover,
.nav-links a.active {
    color: white;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.75rem;
    border-radius: 9999px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), #3b82f6);
    color: white;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: all 0.4s ease;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.5);
}

.btn-outline {
    background: transparent;
    color: white;
    border: 1px solid var(--border);
    backdrop-filter: blur(8px);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}

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

/* Hero Section */
.hero {
    padding: 8rem 0 6rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.2);
    border-radius: 9999px;
    color: var(--primary-light);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 2rem;
    animation: slideDown 0.6s ease forwards;
}

.hero h1 {
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    animation: slideUp 0.8s ease forwards;
    opacity: 0;
    transform: translateY(20px);
}

.hero p {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 3rem;
    animation: slideUp 0.8s ease forwards 0.2s;
    opacity: 0;
    transform: translateY(20px);
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    animation: slideUp 0.8s ease forwards 0.4s;
    opacity: 0;
    transform: translateY(20px);
}

/* App Mockup Animation */
.mockup-container {
    margin-top: 4rem;
    perspective: 1000px;
    animation: slideUp 0.1s ease forwards 0.6s;
}

.mockup {
    width: 100%;
    max-width: 800px;
    height: 440px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px 20px 0 0;
    border-bottom: none;
    box-shadow: 0 -20px 60px rgba(0, 0, 0, 0.4), 0 0 40px rgba(37, 99, 235, 0.1);
    backdrop-filter: var(--glass-blur);
    transform: rotateX(10deg);
    position: relative;
    overflow: hidden;
    transition: transform 0.5s ease;
}

.mockup:hover {
    transform: rotateX(0deg);
}

.mockup-top-bar {
    height: 40px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 1.5rem;
    gap: 0.5rem;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.dot:nth-child(1) {
    background: #ef4444;
}

.dot:nth-child(2) {
    background: #eab308;
}

.dot:nth-child(3) {
    background: #22c55e;
}

.mockup-content {
    padding: 2rem;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
    height: calc(100% - 40px);
}

.mockup-sidebar {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
}

.mockup-main {
    background: rgba(255, 255, 255, 0.02);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.mockup-line {
    height: 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    width: 100%;
}

.mockup-line.short {
    width: 40%;
}

.mockup-line.medium {
    width: 70%;
}

/* Steps Section */
.steps-section {
    padding: 6rem 0;
    position: relative;
    background: linear-gradient(to bottom, transparent, rgba(15, 23, 42, 0.5));
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.section-desc {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    position: relative;
}

.step-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 2.5rem 2rem;
    text-align: center;
    backdrop-filter: var(--glass-blur);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.step-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.step-card:hover {
    transform: translateY(-10px);
    border-color: rgba(255, 255, 255, 0.15);
}

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

.step-number {
    width: 50px;
    height: 50px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
    border: 1px solid rgba(37, 99, 235, 0.2);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.step-card:hover .step-number {
    transform: scale(1.1) rotate(5deg);
}

.step-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: white;
}

.step-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Interactive Calculator Section */
.calculator-section {
    padding: 6rem 0;
    position: relative;
}

.calculator-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 32px;
    padding: 3rem;
    backdrop-filter: var(--glass-blur);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 2rem;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.calc-controls {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.calc-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.calc-group label {
    font-weight: 600;
    display: flex;
    justify-content: space-between;
}

.calc-group label span {
    color: var(--primary-light);
}

/* Custom Range Slider */
input[type=range] {
    -webkit-appearance: none;
    width: 100%;
    background: transparent;
}

input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    height: 24px;
    width: 24px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    margin-top: -8px;
    box-shadow: 0 0 10px rgba(37, 99, 235, 0.5);
    border: 3px solid white;
}

input[type=range]::-webkit-slider-runnable-track {
    width: 100%;
    height: 8px;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

input[type=range]:focus {
    outline: none;
}

.calc-result {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(6, 182, 212, 0.1));
    border: 1px solid rgba(37, 99, 235, 0.2);
    border-radius: 24px;
    padding: 3rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.calc-result::after {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: conic-gradient(from 0deg, transparent 0%, rgba(37, 99, 235, 0.3) 25%, transparent 50%);
    animation: rotate 10s linear infinite;
    top: -50%;
    left: -50%;
    z-index: 0;
    pointer-events: none;
}

@keyframes rotate {
    100% {
        transform: rotate(360deg);
    }
}

.result-content {
    position: relative;
    z-index: 10;
}

.result-val {
    font-size: 4rem;
    font-weight: 800;
    background: linear-gradient(135deg, white, var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 1rem 0;
    filter: drop-shadow(0 4px 10px rgba(6, 182, 212, 0.3));
    transition: all 0.3s ease;
}

.result-label {
    color: var(--text-muted);
    font-size: 1.1rem;
    font-weight: 500;
}

/* Features Grid */
.features-section {
    padding: 6rem 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.feature-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 2rem;
    backdrop-filter: var(--glass-blur);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.feature-box:hover {
    background: rgba(30, 41, 59, 0.8);
    border-color: rgba(6, 182, 212, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transform: translateY(-5px);
}

.feat-icon-wrap {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.2), rgba(6, 182, 212, 0.2));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform 0.3s ease;
}

.feature-box:hover .feat-icon-wrap {
    transform: scale(1.1) rotate(10deg);
}

.feature-box h3 {
    font-size: 1.2rem;
    color: white;
}

.feature-box p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* CTA Banner */
.cta-banner {
    margin: 6rem 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, rgba(30, 41, 59, 0.8) 100%);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 32px;
    padding: 5rem 3rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    backdrop-filter: var(--glass-blur);
    box-shadow: 0 20px 50px rgba(37, 99, 235, 0.2);
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.2) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-banner h2 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    position: relative;
}

.cta-banner p {
    color: #cbd5e1;
    font-size: 1.2rem;
    max-width: 500px;
    margin: 0 auto 2.5rem;
    position: relative;
}

.cta-banner .btn {
    position: relative;
    z-index: 2;
    transform: scale(1.05);
}

/* Footer */
footer {
    background: rgba(2, 6, 23, 0.8);
    border-top: 1px solid var(--border);
    padding: 4rem 0 2rem;
    backdrop-filter: var(--glass-blur);
}

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

.footer-brand p {
    color: var(--text-muted);
    margin-top: 1rem;
    max-width: 300px;
}

.footer-col h4 {
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Animations */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}

/* Content Pages (About, Privacy, Terms) */
.page-header {
    padding: 6rem 0 3rem;
    text-align: center;
}

.page-title {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    font-weight: 800;
    margin-bottom: 1rem;
}

.page-content {
    max-width: 800px;
    margin: 0 auto 6rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 3rem;
    backdrop-filter: var(--glass-blur);
}

.page-content h2 {
    font-size: 1.5rem;
    color: white;
    margin: 2rem 0 1rem;
}

.page-content h2:first-child {
    margin-top: 0;
}

.page-content p {
    color: var(--text-muted);
    margin-bottom: 1.2rem;
}

.page-content ul {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

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

/* Responsive */
@media (max-width: 900px) {
    .steps-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .mockup-content {
        grid-template-columns: 1fr;
    }

    .mockup-sidebar {
        display: none;
    }

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
        /* Add hamburger menu logic if needed */
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero {
        padding: 5rem 0 4rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .cta-banner {
        padding: 3rem 1.5rem;
    }
}