@import url('https://fonts.googleapis.com/css2?family=Red+Hat+Display:wght@300;400;500;600;700;800;900&display=swap');

:root {
    --primary: #2D68FF;
    --primary-light: #E9F0FF;
    --primary-dark: #1E4ED2;
    --primary-glow: rgba(45, 104, 255, 0.3);
    --secondary: #F8FAFF;
    --text-main: #1A1D1E;
    --text-muted: #6A6D7C;
    --text-light: #9CA3AF;
    --white: #FFFFFF;
    --bg-light: #F7F9FC;
    --bg-dark: #0F172A;
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    --card-shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.12);
    --card-shadow-active: 0 8px 30px rgba(45, 104, 255, 0.18);
    --border-radius: 24px;
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Red Hat Display', sans-serif;
    -webkit-tap-highlight-color: transparent;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: #121212; /* Dark background for desktop */
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: flex-start; /* Ensure it starts at the top */
    min-height: 100vh;
    margin: 0;
}

/* App Container */
.app-container {
    width: 100%;
    max-width: 430px; /* Standard mobile width */
    background-color: var(--bg-light);
    height: 100vh;
    height: 100dvh;
    position: relative;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* ===== HEADER ===== */
.header {
    padding: calc(env(safe-area-inset-top, 25px) + 20px) 20px 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    z-index: 10;
}

.top-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.back-btn {
    width: 44px;
    height: 44px;
    border-radius: 16px;
    background: var(--white);
    display: flex;
    justify-content: center;
    align-items: center;
    border: none;
    box-shadow: var(--card-shadow);
    cursor: pointer;
    color: var(--text-main);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.back-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--primary-light);
    opacity: 0;
    transition: var(--transition-fast);
}

.back-btn:hover {
    transform: translateX(-4px);
    box-shadow: var(--card-shadow-hover);
}

.back-btn:hover::before {
    opacity: 1;
}

.back-btn:active {
    transform: scale(0.95);
}

.back-btn i {
    position: relative;
    z-index: 1;
    width: 20px;
    height: 20px;
}

/* Step Badge */
.step-badge {
    display: flex;
    align-items: center;
    gap: 4px;
    background: var(--primary-light);
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 800;
    font-size: 14px;
}

.step-current {
    color: var(--primary);
}

.step-divider {
    color: var(--primary);
    opacity: 0.4;
}

.step-total {
    color: var(--text-muted);
}

/* Progress Bar */
.progress-track {
    width: 100%;
    height: 6px;
    background: #E2E8F0;
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, #6366F1 100%);
    border-radius: 10px;
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.progress-glow {
    position: absolute;
    top: 0;
    right: 0;
    width: 60px;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: shimmer 2s infinite;
    pointer-events: none;
}

@keyframes shimmer {
    0% {
        transform: translateX(-60px);
    }

    100% {
        transform: translateX(60px);
    }
}

/* Header Text */
.header-text {
    margin-top: 4px;
}

.header-subtitle {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 4px;
}

.header h1 {
    font-size: 28px;
    font-weight: 900;
    color: var(--text-main);
    letter-spacing: -0.5px;
}

/* ===== CONTENT ===== */
.content {
    flex: 1;
    padding: 0 20px;
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: none;
    -ms-overflow-style: none;
    position: relative;
}

.content::-webkit-scrollbar {
    display: none;
}

/* Question Group */
.question-group {
    margin-bottom: 32px;
    animation: slideUp 0.6s ease-out both;
}

.question-group:nth-child(1) {
    animation-delay: 0.1s;
}

.question-group:nth-child(2) {
    animation-delay: 0.2s;
}

.question-group:nth-child(3) {
    animation-delay: 0.3s;
}

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

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

.question-group h2 {
    font-size: 15px;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.question-group h2::before {
    content: '';
    width: 4px;
    height: 16px;
    background: var(--primary);
    border-radius: 2px;
}

/* Options Grid */
.options-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

/* Option Card */
.option-card {
    background: var(--white);
    padding: 20px 14px;
    border-radius: 20px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: var(--card-shadow);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-align: center;
    position: relative;
    overflow: hidden;
    user-select: none;
}

.option-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary-light) 0%, transparent 60%);
    opacity: 0;
    transition: var(--transition-smooth);
}

.card-glow {
    position: absolute;
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
    border-radius: 50%;
    opacity: 0;
    transform: scale(0);
    transition: var(--transition-smooth);
    pointer-events: none;
    top: 50%;
    left: 50%;
    margin-top: -50px;
    margin-left: -50px;
}

.option-card:hover .card-glow {
    opacity: 1;
    transform: scale(2);
}

.option-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-shadow-hover);
    border-color: rgba(45, 104, 255, 0.15);
}

.option-card:active {
    transform: scale(0.97);
}

/* Card Icon */
.card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    background: var(--bg-light);
    transition: var(--transition-smooth);
    position: relative;
    z-index: 1;
}

.card-icon i {
    width: 24px;
    height: 24px;
    color: var(--text-muted);
    transition: var(--transition-smooth);
}

/* Card Text */
.card-label {
    font-weight: 800;
    font-size: 14px;
    color: var(--text-main);
    transition: var(--transition-smooth);
    position: relative;
    z-index: 1;
}

.card-desc {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-light);
    transition: var(--transition-smooth);
    position: relative;
    z-index: 1;
}

/* Check Indicator */
.check-indicator {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: scale(0) rotate(-180deg);
    transition: var(--transition-bounce);
    z-index: 2;
}

.check-indicator i {
    width: 12px;
    height: 12px;
    color: var(--white);
    stroke-width: 3;
}

/* Active State */
.option-card.active {
    background: var(--white);
    border-color: var(--primary);
    box-shadow: var(--card-shadow-active);
    transform: translateY(-2px);
}

.option-card.active::before {
    opacity: 0.5;
}

.option-card.active .card-icon {
    background: var(--primary-light);
}

.option-card.active .card-icon i {
    color: var(--primary);
    transform: scale(1.1);
}

.option-card.active .card-label {
    color: var(--primary);
}

.option-card.active .card-desc {
    color: var(--primary);
    opacity: 0.7;
}

.option-card.active .check-indicator {
    opacity: 1;
    transform: scale(1) rotate(0deg);
}

/* Full Width Card */
.option-card.full-width {
    grid-column: span 2;
    flex-direction: row;
    justify-content: flex-start;
    padding: 18px 20px;
    gap: 14px;
    text-align: left;
}

.option-card.full-width .card-icon {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
}

.option-card.full-width .card-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
}

.option-card.full-width .check-indicator {
    position: relative;
    top: auto;
    right: auto;
}

/* Scroll Spacer */
.scroll-spacer {
    height: 120px;
}

/* ===== FOOTER ===== */
.footer {
    padding: 16px 20px 28px;
    background: linear-gradient(0deg, var(--white) 0%, rgba(255, 255, 255, 0.95) 100%);
    border-top: 1px solid rgba(0, 0, 0, 0.04);
    box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.04);
    backdrop-filter: blur(10px);
    z-index: 20;
    position: relative;
    border-top-left-radius: 24px;
    border-top-right-radius: 24px;
}

/* Selection Summary */
.selection-summary {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 16px;
    padding: 0 8px;
}

.summary-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 700;
    color: var(--text-muted);
    transition: var(--transition-fast);
}

.summary-item.active {
    color: var(--primary);
}

.summary-icon {
    width: 14px;
    height: 14px;
    opacity: 0.6;
}

.summary-divider {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--text-light);
    opacity: 0.5;
}

/* Next Button */
.next-btn {
    width: 100%;
    padding: 18px;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--primary) 0%, #6366F1 100%);
    color: var(--white);
    border: none;
    font-size: 16px;
    font-weight: 800;
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: 0 8px 24px rgba(45, 104, 255, 0.35);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    position: relative;
    overflow: hidden;
}

.next-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 0%, rgba(255, 255, 255, 0.2) 50%, transparent 100%);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.next-btn:hover {
    box-shadow: 0 12px 32px rgba(45, 104, 255, 0.45);
    transform: translateY(-2px);
}

.next-btn:hover::before {
    transform: translateX(100%);
}

.next-btn:active {
    transform: translateY(0) scale(0.98);
}

.btn-text {
    position: relative;
    z-index: 1;
}

.btn-icon {
    width: 20px;
    height: 20px;
    position: relative;
    z-index: 1;
    transition: var(--transition-fast);
}

.next-btn:hover .btn-icon {
    transform: translateX(4px);
}

/* Ripple Effect */
.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    transform: scale(0);
    animation: ripple-effect 0.6s ease-out;
    pointer-events: none;
}

@keyframes ripple-effect {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* Selection Pulse */
@keyframes selection-pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(45, 104, 255, 0.4);
    }

    70% {
        box-shadow: 0 0 0 12px rgba(45, 104, 255, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(45, 104, 255, 0);
    }
}

.option-card.just-selected {
    animation: selection-pulse 0.6s ease-out;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 380px) {
    .option-card {
        padding: 16px 10px;
    }

    .card-icon {
        width: 40px;
        height: 40px;
    }

    .card-label {
        font-size: 13px;
    }

    .header h1 {
        font-size: 24px;
    }
}

@media (min-width: 431px) {
    .app-container {
        height: 100vh; /* Match index.html */
        box-shadow: 0 0 100px rgba(0,0,0,0.3);
    }

    body {
        background-color: #121212; /* Match index.html desktop background */
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}