:root {
    --primary: #0f172a;       /* Deep Slate Navy */
    --secondary: #1e293b;     /* Lighter Slate */
    --accent: #2dd4bf;        /* Vibrant Teal/Cyan */
    --accent-light: #5eead4;  /* Light Teal */
    --text-light: #f8fafc;    
    --text-dark: #334155;     
    --white: #ffffff;

    --success-green: #2dd4bf;
    --border-color: rgba(248, 250, 252, 0.1); 
    --card-bg-glass: rgba(30, 41, 59, 0.75); 
    
    --radius-lg: 16px;
    --radius-sm: 8px;
    --trans-speed: 0.3s;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Lato', sans-serif;
    background-color: var(--primary);
    color: var(--text-light);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start; /* Fixes mobile scroll */
    padding: 40px 0;
    overflow-x: hidden;
    position: relative;
}

.background-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: 
        radial-gradient(circle at 15% 15%, rgba(45, 212, 191, 0.05) 0%, transparent 45%),
        radial-gradient(circle at 85% 85%, rgba(45, 212, 191, 0.05) 0%, transparent 45%);
    z-index: -1;
    pointer-events: none;
}

.app-container {
    width: 100%;
    max-width: 500px;
    padding: 20px;
    margin: 0 auto;
}

.app-header {
    text-align: center;
    margin-bottom: 30px;
}

.logo {
    font-family: 'Playfair Display', serif;
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--white);
}

.teal-text {
    background: linear-gradient(135deg, var(--accent), var(--accent-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0px 2px 10px rgba(45, 212, 191, 0.2);
}

.brand-sub {
    font-family: 'Lato', sans-serif;
    font-size: 0.8rem;
    color: var(--accent);
    letter-spacing: 3px; 
    text-transform: uppercase;
    margin-top: -5px;
    margin-bottom: 15px;
    font-weight: 400;
}

.tagline {
    font-size: 0.85rem;
    color: #94a3b8; 
    letter-spacing: 1px;
    margin-top: 8px;
    text-transform: uppercase;
    font-weight: 300;
}

.progress-container {
    width: 100%;
    height: 4px;
    background: rgba(255,255,255,0.1);
    border-radius: 10px;
    margin-bottom: 25px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 16.6%;
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
    transition: width 0.4s ease;
    box-shadow: 0 0 10px rgba(45, 212, 191, 0.4);
}

.card {
    background: var(--card-bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 35px 25px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4); 
    min-height: 420px;
    position: relative;
    display: flex;
    flex-direction: column;
}

.step-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.6rem;
    text-align: center;
    margin-bottom: 30px;
    color: var(--white);
}

.options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.options-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.option-card, .option-row {
    background: rgba(15, 23, 42, 0.4); 
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 20px;
    cursor: pointer;
    transition: all var(--trans-speed) ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.option-row {
    flex-direction: row;
    justify-content: space-between;
    padding: 18px 20px;
}

.option-card i {
    font-size: 1.8rem;
    margin-bottom: 12px;
    color: #94a3b8; 
    transition: color var(--trans-speed);
}

.option-card span, .option-row span {
    font-weight: 400;
    letter-spacing: 0.5px;
    color: var(--text-light);
}

.option-card:hover, .option-row:hover {
    background: rgba(255,255,255,0.05);
    border-color: rgba(45, 212, 191, 0.4);
}

.option-card.selected, .option-row.selected {
    background: rgba(45, 212, 191, 0.15); 
    border-color: var(--accent);
    box-shadow: 0 0 15px rgba(45, 212, 191, 0.15);
}

.option-card.selected i { color: var(--accent); }
.option-card.selected span, .option-row.selected span {
    color: var(--white);
    font-weight: 600;
}

.nav-controls {
    margin-top: auto;
    padding-top: 30px;
    display: flex;
    justify-content: flex-start;
}

.nav-btn.secondary {
    background: rgba(255, 255, 255, 0.1); 
    border: 1px solid rgba(255, 255, 255, 0.25); 
    color: #ffffff; 
    padding: 12px 30px;
    border-radius: 50px;
    font-family: 'Lato', sans-serif;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-btn.secondary:hover {
    background: rgba(45, 212, 191, 0.15); 
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 15px rgba(45, 212, 191, 0.15);
    transform: translateX(-3px);
}

.form-step {
    display: none;
    animation: fadeIn 0.5s ease forwards;
}

.form-step.active { display: block; }

.summary-box {
    background: rgba(15, 23, 42, 0.5);
    border-radius: var(--radius-sm);
    padding: 20px;
    border-left: 3px solid var(--accent);
    margin-bottom: 25px;
}

.summary-box p {
    margin-bottom: 12px;
    display: flex;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    padding-bottom: 8px;
}
.summary-box p:last-child { border-bottom: none; margin-bottom: 0; }
.label { color: #94a3b8; font-size: 0.9rem; }
.value { color: var(--accent); font-weight: 600; font-family: 'Playfair Display', serif; }

.cta-button {
    width: 100%;
    padding: 16px;
    background: #25D366; 
    color: white;
    border: none;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: transform 0.3s;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.2);
}
.cta-button:hover { transform: scale(1.02); background: #20bd5a; }

.success-screen {
    display: none;
    text-align: center;
    padding: 20px 0;
    animation: scaleIn 0.5s ease;
}

.check-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--accent);
    color: var(--primary); 
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin: 0 auto 25px;
    box-shadow: 0 0 20px rgba(45, 212, 191, 0.3);
}

.app-footer {
    text-align: center;
    margin-top: 30px;
    font-size: 0.75rem;
    color: #64748b;
}

/* Minimalist SEO & FAQ Section */
.seo-section {
    width: 100%;
    margin: 40px auto 10px;
    color: #94a3b8; 
    text-align: left;
}

.seo-content h2, .faq-container h2 {
    font-family: 'Playfair Display', serif;
    font-size: 1.3rem;
    color: #ffffff;
    margin-bottom: 12px;
    border-bottom: 1px solid rgba(45, 212, 191, 0.2); 
    padding-bottom: 8px;
    letter-spacing: 0.5px;
}

.seo-content p {
    font-size: 0.85rem;
    line-height: 1.6;
    margin-bottom: 30px;
}

.faq-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.3s ease;
}

.faq-item summary {
    padding: 16px 0;
    cursor: pointer;
    color: #cbd5e1;
    font-weight: 400;
    font-size: 0.95rem;
    list-style: none; 
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
    content: '+';
    color: var(--accent); 
    font-size: 1.5rem;
    font-weight: 300;
    transition: transform 0.3s ease;
}
.faq-item[open] summary::after { content: '−'; }

.faq-answer {
    padding: 0 0 16px 0;
    font-size: 0.85rem;
    line-height: 1.6;
    color: #64748b;
    animation: fadeIn 0.4s ease forwards;
}

/* Particles Background */
.particles {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    pointer-events: none;
    z-index: -1; 
    overflow: hidden;
}

.particle {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
    box-shadow: 0 0 10px rgba(45, 212, 191, 0.4); 
    opacity: 0; 
    filter: blur(2px); 
    animation: floatTeal linear infinite;
}

@keyframes floatTeal {
    0% { transform: translateY(110vh) translateX(0) scale(0.5); opacity: 0; }
    20% { opacity: 0.4; }
    50% { opacity: 0.2; transform: translateY(50vh) translateX(20px) scale(1); }
    80% { opacity: 0.4; }
    100% { transform: translateY(-10vh) translateX(-20px) scale(0.5); opacity: 0; }
}

@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
@keyframes scaleIn { from { opacity: 0; transform: scale(0.9); } to { opacity: 1; transform: scale(1); } }

@media (max-width: 400px) {
    .step-title { font-size: 1.4rem; }
    .option-card { padding: 15px; }
    .seo-content h2, .faq-container h2 { font-size: 1.15rem; }
    .faq-item summary { font-size: 0.9rem; padding: 14px 0; }
    .faq-answer, .seo-content p { font-size: 0.8rem; }
}