/* Modern Design System for Teacher MBTI Test */

:root {
    --primary-gradient: linear-gradient(135deg, #ff758c 0%, #ff7eb3 100%);
    --secondary-gradient: linear-gradient(135deg, #8ec5fc 0%, #e0c3fc 100%);
    --bg-gradient: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    --accent-color: #6c5ce7;
    --text-main: #2d3436;
    --text-sub: #636e72;
    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-border: rgba(255, 255, 255, 0.4);
    --shadow-premium: 0 20px 40px rgba(0, 0, 0, 0.06);
    --radius-lg: 24px;
    --radius-md: 16px;
    --transition-smooth: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Noto Sans KR', 'Outfit', sans-serif;
    -webkit-tap-highlight-color: transparent;
}

body {
    background: var(--bg-gradient);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    overflow-x: hidden;
    position: relative;
    padding: 20px;
}

/* Background Animated Circles */
.background-decorations {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    overflow: hidden;
    z-index: 0;
    pointer-events: none;
}

.circle {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
}

.circle-1 {
    width: 300px;
    height: 300px;
    background: #ff7eb3;
    top: -50px;
    left: -50px;
    animation: float-slow 12s infinite alternate;
}

.circle-2 {
    width: 400px;
    height: 400px;
    background: #8ec5fc;
    bottom: -100px;
    right: -100px;
    animation: float-slow 18s infinite alternate-reverse;
}

.circle-3 {
    width: 250px;
    height: 250px;
    background: #f6d365;
    top: 40%;
    left: 70%;
    animation: float-slow 15s infinite alternate;
}

@keyframes float-slow {
    0% { transform: translateY(0px) rotate(0deg); }
    100% { transform: translateY(30px) rotate(360deg); }
}

/* App Container */
.app-container {
    width: 100%;
    max-width: 600px;
    margin: auto;
    z-index: 1;
    position: relative;
}

/* Card Style */
.card {
    border-radius: var(--radius-lg);
    padding: 40px 30px;
    box-shadow: var(--shadow-premium);
    transition: var(--transition-smooth);
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
}

.text-center {
    text-align: center;
}

/* Screen Navigation */
.screen {
    display: none;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.screen.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

/* Badge */
.badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(108, 92, 231, 0.1);
    color: var(--accent-color);
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

/* Main Titles */
.main-title {
    font-size: 2.2rem;
    font-weight: 800;
    line-height: 1.3;
    color: var(--text-main);
    margin-bottom: 15px;
}

.highlight {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.subtitle {
    font-size: 1.05rem;
    color: var(--text-sub);
    line-height: 1.6;
    margin-bottom: 30px;
}

/* Visual Assets */
.intro-visual {
    margin: 30px 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

.book-svg {
    width: 160px;
    height: 160px;
    animation: hover-anim 4s ease-in-out infinite;
}

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

/* Buttons */
.btn {
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: var(--transition-smooth);
    outline: none;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 10px 20px rgba(255, 117, 140, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 15px 25px rgba(255, 117, 140, 0.4);
}

.btn-large {
    width: 100%;
    padding: 18px 30px;
    font-size: 1.2rem;
}

.btn-secondary {
    background: var(--secondary-gradient);
    color: #4a4e69;
    box-shadow: 0 10px 20px rgba(142, 197, 252, 0.3);
    padding: 15px 25px;
    font-size: 1rem;
    width: 100%;
}

.btn-secondary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 15px 25px rgba(142, 197, 252, 0.4);
}

.arrow-icon {
    transition: transform 0.3s ease;
}

.btn:hover .arrow-icon {
    transform: translateX(5px);
}

.user-count {
    font-size: 0.85rem;
    color: var(--text-sub);
    margin-top: 20px;
}

/* Quiz Style */
.quiz-header {
    margin-bottom: 30px;
}

.progress-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.progress-bar-track {
    width: 100%;
    height: 8px;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 10px;
    overflow: hidden;
}

.progress-bar-fill {
    width: 0%;
    height: 100%;
    background: var(--primary-gradient);
    border-radius: 10px;
    transition: width 0.4s ease-in-out;
}

.progress-text {
    align-self: flex-end;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-color);
}

.question-container {
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 40px;
}

.question-title {
    font-size: 1.4rem;
    font-weight: 700;
    line-height: 1.5;
    color: var(--text-main);
    text-align: center;
    word-break: keep-all;
}

.options-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.btn-option {
    width: 100%;
    padding: 20px 25px;
    text-align: left;
    background: white;
    border: 2px solid transparent;
    color: var(--text-main);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.02);
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 1.05rem;
    font-weight: 500;
    line-height: 1.4;
    transition: var(--transition-smooth);
}

.btn-option:hover {
    border-color: #ff7eb3;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(255, 126, 179, 0.1);
}

.option-letter {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: #f1f2f6;
    border-radius: 50%;
    font-weight: 800;
    font-size: 0.95rem;
    color: var(--text-sub);
    transition: var(--transition-smooth);
    flex-shrink: 0;
}

.btn-option:hover .option-letter {
    background: var(--primary-gradient);
    color: white;
}

.option-text {
    word-break: keep-all;
}

/* Loading Screen */
.loader-spinner {
    width: 60px;
    height: 60px;
    border: 5px solid rgba(108, 92, 231, 0.1);
    border-top: 5px solid var(--accent-color);
    border-radius: 50%;
    margin: 40px auto;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-title {
    font-size: 1.25rem;
    color: var(--text-main);
    font-weight: 700;
    margin-bottom: 10px;
    word-break: keep-all;
}

.loading-subtitle {
    font-size: 0.95rem;
    color: var(--text-sub);
}

/* Result Screen */
.result-card {
    padding: 50px 30px;
}

.result-badge {
    margin-bottom: 15px;
}

.result-mbti-type {
    font-family: 'Outfit', sans-serif;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--accent-color);
    letter-spacing: 2px;
    margin-bottom: 5px;
}

.result-subject-title {
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--text-main);
    margin-bottom: 15px;
}

.result-one-liner {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-sub);
    margin-bottom: 30px;
    word-break: keep-all;
}

.result-illustration {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 35px;
}

.result-illustration svg {
    width: 180px;
    height: 180px;
}

.result-details {
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 25px;
    margin-bottom: 35px;
}

.detail-section h3 {
    font-size: 1.15rem;
    color: var(--text-main);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.detail-section p {
    font-size: 0.98rem;
    color: var(--text-sub);
    line-height: 1.6;
    background: rgba(255, 255, 255, 0.4);
    padding: 15px 20px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.3);
    word-break: keep-all;
}

/* Compatibility */
.compatibility-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-top: 10px;
}

.comp-card {
    padding: 15px;
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.comp-card.good {
    background: rgba(46, 213, 115, 0.15);
}

.comp-card.bad {
    background: rgba(255, 71, 87, 0.1);
}

.comp-title {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-sub);
    display: block;
    margin-bottom: 8px;
}

.comp-content {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-main);
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

/* Footer */
.app-footer {
    padding: 20px;
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-sub);
    z-index: 1;
}

/* Responsive adjustments */
@media (max-width: 480px) {
    body {
        padding: 15px;
    }
    .card {
        padding: 30px 20px;
    }
    .main-title {
        font-size: 1.8rem;
    }
    .question-title {
        font-size: 1.2rem;
    }
    .btn-option {
        padding: 15px 20px;
        font-size: 0.95rem;
    }
    .compatibility-row {
        grid-template-columns: 1fr;
    }
}