:root {
    --primary: #007BFF;
    --primary-dark: #0056b3;
    --secondary: #6c757d;
    --success: #28a745;
    --bg-body: #f8f9fa;
    --bg-header: rgba(255, 255, 255, 0.95);
    --text-main: #212529;
    --text-muted: #6c757d;
    --radius: 12px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    height: 64px;
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-header);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    transition: 0.3s;
}

.header.scrolled {
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.nav-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo-box {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-img { height: 32px; }
.logo-text { font-size: 20px; font-weight: 700; color: var(--primary); }

.dl-btn {
    background: var(--primary);
    color: #fff;
    border: none;
    padding: 8px 24px;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    font-size: 14px;
    transition: 0.2s;
}

.dl-btn:hover { background: var(--primary-dark); }

/* Hero */
.hero {
    padding: 80px 0;
    background: #fff;
    overflow: hidden;
}

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

.hero-info h1 {
    font-size: 48px;
    line-height: 1.2;
    margin-bottom: 20px;
    color: #000;
}

.hero-info p {
    font-size: 18px;
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 90%;
}

.cta-box {
    display: flex;
    gap: 15px;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    border: none;
    padding: 16px 48px;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: 0.2s;
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
    min-width: 200px;
}

/* Breathing Animation */
.breathing-btn {
    animation: breathing 2s infinite ease-in-out;
}

@keyframes breathing {
    0% {
        box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 4px 25px rgba(0, 123, 255, 0.6);
        transform: scale(1.05);
    }
    100% {
        box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
        transform: scale(1);
    }
}

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

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
    padding: 12px 34px;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
}

.btn-outline:hover { background: rgba(0, 123, 255, 0.05); }

/* Mockup */
.hero-mockup {
    position: relative;
    width: 280px;
    margin: 0 auto;
}

.phone {
    width: 100%;
    aspect-ratio: 9/18;
    background: #000;
    border-radius: 36px;
    border: 8px solid #2c3e50;
    overflow: hidden;
    position: relative;
    z-index: 2;
    box-shadow: 0 25px 50px rgba(0,0,0,0.25);
}

.carousel-track {
    display: flex;
    height: 100%;
    transition: transform 0.5s cubic-bezier(0.25, 1, 0.5, 1);
}

.slide {
    min-width: 100%;
    height: 100%;
}

.slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.mockup-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #dee2e6;
    cursor: pointer;
    transition: 0.3s;
}

.dot.active { background: var(--primary); width: 20px; border-radius: 4px; }

/* Floating Elements */
.float-tag {
    position: absolute;
    background: rgba(255, 255, 255, 0.95);
    padding: 12px 20px;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 600;
    z-index: 3;
    backdrop-filter: blur(5px);
    animation: float 4s ease-in-out infinite;
}

.float-tag i { color: var(--success); font-size: 18px; }
.t1 { top: 15%; left: -60px; }
.t2 { bottom: 20%; right: -50px; animation-delay: 2s; }

@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-10px)} }

/* Features */
.features { padding: 80px 0; }
.sec-head { text-align: center; margin-bottom: 60px; }
.sec-head h2 { font-size: 32px; margin-bottom: 15px; }
.sec-head p { color: var(--text-muted); }

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

.f-card {
    background: #fff;
    padding: 30px 20px;
    border-radius: var(--radius);
    text-align: center;
    transition: 0.3s;
    border: 1px solid #eee;
}

.f-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    border-color: transparent;
}

.f-icon {
    width: 56px;
    height: 56px;
    background: #e6f2ff;
    color: var(--primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin: 0 auto 20px;
}

.f-card h3 { font-size: 18px; margin-bottom: 10px; }
.f-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

/* App Scenes */
.scenes { padding: 60px 0; background: #fff; }
.scene-flex {
    display: flex;
    align-items: center;
    gap: 60px;
    background: #f1f8ff;
    border-radius: 20px;
    padding: 60px;
    overflow: hidden;
}

.scene-text { flex: 1; }
.scene-text h2 { font-size: 32px; margin-bottom: 20px; }
.scene-text ul { list-style: none; margin-top: 30px; }
.scene-text li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    font-size: 16px;
    font-weight: 500;
}
.scene-text i { color: var(--primary); }

.scene-img {
    flex: 1;
    position: relative;
    height: 300px;
}

/* Abstract Monitor Grid */
.monitor-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    width: 100%;
    height: 100%;
    transform: perspective(1000px) rotateY(-10deg);
}

.monitor-item {
    background: #000;
    border-radius: 8px;
    overflow: hidden;
    position: relative;
}

.monitor-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.8;
}

.rec-dot {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 8px;
    height: 8px;
    background: red;
    border-radius: 50%;
}

/* Footer & SEO */
.footer {
    background: #212529;
    color: #adb5bd;
    padding: 60px 0 30px;
}

.seo-content {
    max-width: 800px;
    margin: 0 auto 40px;
    text-align: center;
    font-size: 13px;
    line-height: 1.8;
    border-bottom: 1px solid #343a40;
    padding-bottom: 40px;
}

.seo-content h3 { color: #fff; margin-bottom: 15px; font-size: 16px; }

.copyright { text-align: center; font-size: 12px; }

/* Animation */
.animate { opacity: 0; transform: translateY(20px); transition: 0.6s; }
.in-view { opacity: 1; transform: translateY(0); }

/* Responsive */
@media (max-width: 900px) {
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .scene-flex { flex-direction: column; text-align: center; padding: 40px 20px; }
    .monitor-grid { transform: none; width: 280px; height: 280px; margin: 0 auto; }
}

@media (max-width: 768px) {
    .hero-grid { grid-template-columns: 1fr; text-align: center; gap: 40px; }
    .hero-info h1 { font-size: 36px; }
    .cta-box { justify-content: center; }
    .t1 { left: 0; } .t2 { right: 0; }
}