/* ==========================================================================
   ThinkPad Battery Orchestrator - Landing Page Stylesheet
   Design System: Premium Dark & Glassmorphism Neon
   ========================================================================== */

/* 1. RESET E ESTILOS GERAIS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-color: #0b0f19;
    --card-bg: rgba(22, 30, 49, 0.7);
    --border-color: rgba(255, 255, 255, 0.08);
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --accent-blue: #00d2ff;
    --accent-cyan: #00f2fe;
    --accent-glow: rgba(0, 242, 254, 0.3);
    --success: #2ecc71;
    --danger: #e74c3c;
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
}

html {
    scroll-behavior: smooth;
}

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

/* Fundo Dinâmico com Gradientes */
.gradient-bg {
    position: absolute;
    top: -200px;
    right: -200px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-glow) 0%, rgba(11,15,25,0) 70%);
    z-index: -1;
    pointer-events: none;
}

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

/* 2. CABEÇALHO / HEADER */
.header {
    background-color: rgba(11, 15, 25, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 800;
    color: var(--text-primary);
}

.logo-icon {
    color: var(--accent-cyan);
    text-shadow: 0 0 10px var(--accent-glow);
}

.logo span span {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    transition: color 0.3s ease;
}

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

.btn-nav {
    background: linear-gradient(135deg, rgba(0, 210, 255, 0.15), rgba(0, 242, 254, 0.15));
    border: 1px solid var(--accent-cyan);
    color: var(--accent-cyan) !important;
    padding: 10px 20px;
    border-radius: 50px;
    transition: all 0.3s ease !important;
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.1);
}

.btn-nav:hover {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    color: var(--bg-color) !important;
    box-shadow: 0 0 20px var(--accent-glow);
    transform: translateY(-2px);
}

/* 3. SEÇÃO HERO */
.hero {
    padding: 80px 0 120px 0;
    position: relative;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
}

.hero-content .badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 242, 254, 0.1);
    color: var(--accent-cyan);
    border: 1px solid rgba(0, 242, 254, 0.2);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 24px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.hero-content h1 {
    font-family: var(--font-heading);
    font-size: 52px;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
    background: linear-gradient(to right, #ffffff, #d1d5db);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    color: var(--text-secondary);
    font-size: 18px;
    margin-bottom: 35px;
}

.hero-actions {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    color: var(--bg-color);
    text-decoration: none;
    font-weight: 700;
    font-size: 16px;
    padding: 16px 32px;
    border-radius: 8px;
    box-shadow: 0 0 25px var(--accent-glow);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 35px var(--accent-cyan);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    font-weight: 600;
    font-size: 16px;
    padding: 16px 32px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.hero-meta {
    display: flex;
    gap: 25px;
    color: var(--text-secondary);
    font-size: 14px;
}

.hero-meta i {
    color: var(--accent-cyan);
    margin-right: 5px;
}

/* Ilustração do Aplicativo (Glassmorphism) */
.hero-preview {
    display: flex;
    justify-content: center;
}

.app-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.app-header {
    background-color: rgba(17, 24, 39, 0.5);
    border-bottom: 1px solid var(--border-color);
    height: 45px;
    display: flex;
    align-items: center;
    padding: 0 15px;
    position: relative;
}

.dots {
    display: flex;
    gap: 6px;
}

.dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}

.dots span:nth-child(1) { background-color: #ef4444; }
.dots span:nth-child(2) { background-color: #f59e0b; }
.dots span:nth-child(3) { background-color: #10b981; }

.app-title {
    position: absolute;
    width: 100%;
    text-align: center;
    left: 0;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
}

.app-body {
    padding: 25px;
}

.card-label {
    display: block;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.battery-status-card {
    background: rgba(11, 15, 25, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    text-align: center;
}

.battery-percent {
    font-size: 48px;
    font-family: var(--font-heading);
    font-weight: 800;
    display: block;
    color: #fff;
    line-height: 1.1;
    margin-bottom: 10px;
}

.battery-bar-container {
    background-color: rgba(255, 255, 255, 0.1);
    height: 10px;
    border-radius: 50px;
    overflow: hidden;
    margin-bottom: 15px;
}

.battery-bar {
    background: linear-gradient(to right, var(--accent-blue), var(--accent-cyan));
    height: 100%;
    border-radius: 50px;
    box-shadow: 0 0 10px var(--accent-glow);
}

.battery-msg {
    font-size: 13px;
    color: var(--success);
    font-weight: 600;
}

.controls-card {
    background: rgba(11, 15, 25, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
}

.control-row {
    margin-bottom: 15px;
}

.control-row:last-child {
    margin-bottom: 0;
}

.control-row span {
    display: block;
    font-size: 13px;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.control-row strong {
    color: var(--accent-cyan);
}

.range-track {
    background-color: rgba(255, 255, 255, 0.1);
    height: 6px;
    border-radius: 50px;
    position: relative;
}

.range-fill {
    background-color: var(--accent-cyan);
    height: 100%;
    border-radius: 50px;
    display: block;
}

/* 4. SEÇÃO RECURSOS */
.features {
    padding: 100px 0;
    background-color: rgba(17, 24, 39, 0.3);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.section-title {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px auto;
}

.section-title h2 {
    font-family: var(--font-heading);
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 15px;
}

.section-title p {
    color: var(--text-secondary);
    font-size: 16px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 40px 30px;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 242, 254, 0.2);
    box-shadow: 0 15px 30px rgba(0, 242, 254, 0.05);
}

.feature-icon {
    font-size: 32px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 20px;
    display: inline-block;
}

.feature-card h3 {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* 5. SEÇÃO COMO FUNCIONA */
.how-it-works {
    padding: 100px 0;
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.step-card {
    position: relative;
    text-align: center;
    padding: 20px;
}

.step-num {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: rgba(0, 242, 254, 0.1);
    border: 2px solid var(--accent-cyan);
    color: var(--accent-cyan);
    font-size: 22px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px auto;
    box-shadow: 0 0 20px rgba(0, 242, 254, 0.15);
}

.step-card h3 {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.step-card p {
    color: var(--text-secondary);
    font-size: 14px;
    max-width: 280px;
    margin: 0 auto;
}

/* 6. CTA / DOWNLOAD SECTION */
.cta-section {
    padding: 100px 0 140px 0;
}

.cta-card {
    background: radial-gradient(circle at top right, rgba(0, 210, 255, 0.1), rgba(11, 15, 25, 0.9)), var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 60px 40px;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
}

.cta-card h2 {
    font-family: var(--font-heading);
    font-size: 38px;
    font-weight: 800;
    margin-bottom: 15px;
}

.cta-card p {
    color: var(--text-secondary);
    font-size: 18px;
    max-width: 600px;
    margin: 0 auto 35px auto;
}

.btn-large {
    font-size: 18px;
    padding: 18px 45px;
    border-radius: 10px;
}

.file-info {
    display: block;
    margin-top: 15px;
    font-size: 12px;
    color: var(--text-secondary);
}

.file-info i {
    margin-right: 5px;
}

/* 7. RODAPÉ / FOOTER */
.footer {
    border-top: 1px solid var(--border-color);
    background-color: #060910;
    padding: 40px 0;
    color: var(--text-secondary);
    font-size: 13px;
}

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

/* 8. RESPONSIVIDADE */
@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 50px;
        text-align: center;
    }
    
    .hero-content h1 {
        font-size: 40px;
    }
    
    .hero-content p {
        font-size: 16px;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-meta {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .steps-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 576px) {
    .header-container {
        flex-direction: column;
        height: auto;
        padding: 15px 0;
        gap: 15px;
    }
    
    .nav {
        gap: 20px;
    }
    
    .hero-actions {
        flex-direction: column;
        gap: 15px;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}