:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-card: linear-gradient(145deg, #15151f 0%, #0d0d14 100%);
    --accent-gold: #d4af37;
    --accent-gold-light: #f0d875;
    --gradient-gold: linear-gradient(135deg, #d4af37 0%, #f0d875 50%, #d4af37 100%);
    --gradient-fire: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 50%, #d63031 100%);
    --gradient-glow: radial-gradient(circle at center, rgba(212, 175, 55, 0.15) 0%, transparent 70%);
    --text-primary: #f5f5f5;
    --text-secondary: #a0a0a0;
    --text-muted: #6a6a6a;
    --shadow-glow: 0 0 30px rgba(212, 175, 55, 0.3);
    --font-display: 'ZCOOL XiaoWei', 'Noto Serif SC', serif;
    --font-body: 'Noto Serif SC', serif;
    --border-subtle: 1px solid rgba(212, 175, 55, 0.15);
    --border-accent: 1px solid rgba(212, 175, 55, 0.4);
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Ambient Background */
.ambient-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.ambient-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at 30% 20%, rgba(212, 175, 55, 0.05) 0%, transparent 50%), radial-gradient(ellipse at 70% 80%, rgba(139, 0, 0, 0.05) 0%, transparent 50%);
    animation: ambientMove 30s ease-in-out infinite;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--accent-gold);
    border-radius: 50%;
    opacity: 0.3;
    animation: floatParticle 15s infinite;
}

.particle:nth-child(1) {
    left: 10%;
    top: 20%;
}

.particle:nth-child(2) {
    left: 30%;
    top: 60%;
    animation-delay: 2s;
}

.particle:nth-child(3) {
    left: 50%;
    top: 30%;
    animation-delay: 4s;
}

.particle:nth-child(4) {
    left: 70%;
    top: 70%;
    animation-delay: 6s;
}

.particle:nth-child(5) {
    left: 90%;
    top: 40%;
    animation-delay: 8s;
}

@keyframes ambientMove {

    0%,
    100% {
        transform: translate(0, 0);
    }

    50% {
        transform: translate(2%, 2%);
    }
}

@keyframes floatParticle {

    0%,
    100% {
        transform: translateY(0) scale(1);
        opacity: 0.3;
    }

    50% {
        transform: translateY(-100px) scale(1.5);
        opacity: 0.6;
    }
}

@keyframes rotateSymbol {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

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

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

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

/* Container */
.container {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: 1.5rem;
}

/* Header */
.header {
    text-align: center;
    padding: 2rem 0 1.5rem;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    margin-bottom: 0.3rem;
}

.bagua-symbol {
    font-size: 2.5rem;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: rotateSymbol 20s linear infinite;
}

.header h1 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 0.15em;
}

.subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    letter-spacing: 0.2em;
}

/* Step Indicator */
.step-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    margin: 2rem 0;
    padding: 0 1rem;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    opacity: 0.4;
    transition: all var(--transition-medium);
}

.step.active {
    opacity: 1;
}

.step.completed {
    opacity: 0.7;
}

.step-number {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    border: 2px solid var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 1rem;
    color: var(--text-muted);
    transition: all var(--transition-medium);
}

.step.active .step-number {
    background: var(--gradient-gold);
    border-color: var(--accent-gold);
    color: var(--bg-primary);
    font-weight: 600;
}

.step.completed .step-number {
    background: rgba(212, 175, 55, 0.2);
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

.step-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.step.active .step-label {
    color: var(--accent-gold);
}

.step-line {
    width: 60px;
    height: 2px;
    background: var(--text-muted);
    opacity: 0.3;
    margin: 0 0.5rem;
    margin-bottom: 1.5rem;
}

/* Step Sections */
.step-section {
    display: none;
    animation: fadeInUp 0.5s ease;
}

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

/* Step Card */
.step-card {
    background: var(--bg-card);
    border: var(--border-subtle);
    border-radius: 20px;
    padding: 2rem;
    margin-bottom: 1.5rem;
}

.step-header {
    text-align: center;
    margin-bottom: 0.5rem;
}

.step-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: 0.5rem;
}

.step-header h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--text-primary);
}

.step-hint {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

/* Item Input */
.item-input-wrapper {
    position: relative;
    margin-bottom: 1.5rem;
}

.item-input-wrapper textarea {
    width: 100%;
    height: 100px;
    background: var(--bg-tertiary);
    border: var(--border-subtle);
    border-radius: 16px;
    padding: 1.2rem;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1.1rem;
    resize: none;
    transition: all var(--transition-fast);
    text-align: center;
    line-height: 1.6;
}

.item-input-wrapper textarea:focus {
    outline: none;
    border-color: var(--accent-gold);
    box-shadow: 0 0 30px rgba(212, 175, 55, 0.15);
}

.item-input-wrapper textarea::placeholder {
    color: var(--text-muted);
}

.input-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 80%;
    height: 80%;
    transform: translate(-50%, -50%);
    background: var(--gradient-glow);
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.item-input-wrapper:focus-within .input-glow {
    opacity: 1;
}

/* Example Tags */
.example-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    justify-content: center;
    margin-bottom: 2rem;
}

.tag {
    padding: 0.4rem 1rem;
    background: var(--bg-tertiary);
    border: var(--border-subtle);
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tag:hover {
    border-color: var(--accent-gold);
    color: var(--accent-gold);
    transform: translateY(-2px);
}

/* Next Button */
.next-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
    padding: 1rem 2rem;
    background: var(--gradient-gold);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all var(--transition-medium);
}

.next-btn:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-glow);
}

.next-btn span {
    font-family: var(--font-display);
    font-size: 1rem;
    color: var(--bg-primary);
    font-weight: 600;
}

.btn-arrow {
    font-size: 1.2rem;
}

/* Lost Item Display */
.lost-item-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    padding: 1rem;
    background: rgba(212, 175, 55, 0.08);
    border: var(--border-subtle);
    border-radius: 12px;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.display-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.display-item {
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--accent-gold);
    font-weight: 500;
}

.edit-btn {
    padding: 0.3rem 0.8rem;
    background: transparent;
    border: 1px solid var(--text-muted);
    border-radius: 20px;
    color: var(--text-muted);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.edit-btn:hover {
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

/* Method Cards */
.method-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

@media (max-width: 600px) {
    .method-cards {
        grid-template-columns: 1fr;
    }
}

.method-card {
    position: relative;
    background: var(--bg-tertiary);
    border: var(--border-subtle);
    border-radius: 16px;
    padding: 1.5rem 1rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-medium);
}

.method-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-gold);
    border-radius: 16px 16px 0 0;
    transform: scaleX(0);
    transition: transform var(--transition-medium);
}

.method-card:hover {
    transform: translateY(-4px);
    border-color: rgba(212, 175, 55, 0.3);
}

.method-card:hover::before,
.method-card.active::before {
    transform: scaleX(1);
}

.method-card.active {
    border-color: var(--accent-gold);
    box-shadow: var(--shadow-glow);
}

.card-glow {
    position: absolute;
    inset: 0;
    background: var(--gradient-glow);
    opacity: 0;
    transition: opacity var(--transition-medium);
    pointer-events: none;
    border-radius: 16px;
}

.method-card:hover .card-glow,
.method-card.active .card-glow {
    opacity: 1;
}

.method-icon {
    font-size: 2rem;
    margin-bottom: 0.6rem;
    position: relative;
    z-index: 1;
}

.method-card h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 0.2rem;
    position: relative;
    z-index: 1;
}

.method-subtitle {
    font-size: 0.75rem;
    color: var(--accent-gold);
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 1;
}

.method-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
    position: relative;
    z-index: 1;
}

.card-badge {
    position: absolute;
    top: 0.8rem;
    right: 0.8rem;
    background: var(--gradient-fire);
    color: white;
    font-size: 0.65rem;
    padding: 0.2rem 0.5rem;
    border-radius: 10px;
}

/* Method Input Section */
.method-input-section {
    display: none;
}

.method-input-section.active {
    display: block;
    animation: fadeInUp 0.4s ease;
}

.method-form {
    display: none;
    background: var(--bg-card);
    border: var(--border-subtle);
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
}

.method-form.active {
    display: block;
    animation: fadeInUp 0.4s ease;
}

.method-form h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}

.form-hint {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

/* Number Inputs */
.number-inputs {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.number-input-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
}

.number-input-group input {
    width: 80px;
    height: 60px;
    background: var(--bg-tertiary);
    border: var(--border-subtle);
    border-radius: 12px;
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 1.5rem;
    text-align: center;
}

.number-input-group input:focus {
    outline: none;
    border-color: var(--accent-gold);
}

.input-label {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Character Input */
.char-input-wrapper {
    margin: 0 auto 1.5rem;
    max-width: 200px;
}

.char-input-wrapper input {
    width: 100%;
    height: 70px;
    background: var(--bg-tertiary);
    border: var(--border-subtle);
    border-radius: 12px;
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 2.5rem;
    text-align: center;
    letter-spacing: 0.5em;
}

.char-input-wrapper input:focus {
    outline: none;
    border-color: var(--accent-gold);
}

/* Instant Display */
.instant-display {
    margin-bottom: 1.5rem;
}

.time-display {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--accent-gold);
    margin-bottom: 0.3rem;
    letter-spacing: 0.1em;
}

.time-hint {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Divine Button */
.divine-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    width: 100%;
    max-width: 240px;
    margin: 0 auto;
    padding: 1rem 2rem;
    background: var(--gradient-gold);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all var(--transition-medium);
}

.divine-btn:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

.btn-text {
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--bg-primary);
    font-weight: 600;
}

.btn-icon {
    font-size: 1.2rem;
    animation: rotateSymbol 8s linear infinite;
}

.instant-btn {
    animation: pulse 2s ease-in-out infinite;
}

.instant-btn:hover {
    animation: none;
}

/* Result Card */
.result-card {
    background: var(--bg-card);
    border: var(--border-accent);
    border-radius: 24px;
    padding: 2rem;
    position: relative;
}

.result-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-gold);
    border-radius: 24px 24px 0 0;
}

.hexagram-display {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: var(--border-subtle);
}

.hexagram-animation {
    font-size: 3.5rem;
    margin-bottom: 0.8rem;
    color: var(--accent-gold);
    text-shadow: 0 0 30px rgba(212, 175, 55, 0.5);
}

.hexagram-name {
    font-family: var(--font-display);
    font-size: 1.6rem;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}

.hexagram-method {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.result-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-display);
    font-size: 1.2rem;
    color: var(--accent-gold);
    margin-bottom: 1.2rem;
}

.result-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

@media (max-width: 500px) {
    .result-grid {
        grid-template-columns: 1fr;
    }
}

.result-item {
    background: var(--bg-tertiary);
    border: var(--border-subtle);
    border-radius: 14px;
    padding: 1.2rem;
    text-align: center;
    transition: all var(--transition-fast);
}

.result-item.primary {
    grid-column: span 2;
    background: rgba(212, 175, 55, 0.08);
    border-color: rgba(212, 175, 55, 0.3);
}

@media (max-width: 500px) {
    .result-item.primary {
        grid-column: span 1;
    }
}

.result-item:hover {
    transform: translateY(-2px);
    border-color: rgba(212, 175, 55, 0.3);
}

.result-item-icon {
    font-size: 1.3rem;
    margin-bottom: 0.3rem;
}

.result-item-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.3rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.result-item-value {
    font-family: var(--font-display);
    font-size: 1rem;
    color: var(--text-primary);
    line-height: 1.4;
}

.result-item.primary .result-item-value {
    font-size: 1.2rem;
    color: var(--accent-gold);
}

.detailed-analysis {
    background: rgba(212, 175, 55, 0.05);
    border: var(--border-subtle);
    border-radius: 14px;
    padding: 1.2rem;
    margin-bottom: 1.5rem;
}

.detailed-analysis h4 {
    font-family: var(--font-display);
    color: var(--accent-gold);
    margin-bottom: 0.8rem;
    font-size: 1rem;
}

.detailed-analysis p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.9rem;
    margin-bottom: 0.6rem;
}

.detailed-analysis p:last-child {
    margin-bottom: 0;
}

.detailed-analysis strong {
    color: var(--text-primary);
}

.detailed-analysis .highlight {
    color: var(--accent-gold);
    font-weight: 600;
}

/* Result Actions */
.result-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.restart-btn,
.share-btn {
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    font-family: var(--font-display);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.restart-btn {
    background: transparent;
    border: var(--border-accent);
    color: var(--accent-gold);
}

.restart-btn:hover {
    background: rgba(212, 175, 55, 0.1);
}

.share-btn {
    background: var(--bg-tertiary);
    border: var(--border-subtle);
    color: var(--text-secondary);
}

.share-btn:hover {
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

/* Enhancement Section */
.enhance-section {
    margin-bottom: 2rem;
    border: var(--border-subtle);
    border-radius: 16px;
    overflow: hidden;
}

.enhance-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.8rem 1rem;
    background: rgba(212, 175, 55, 0.05);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.enhance-toggle:hover {
    background: rgba(212, 175, 55, 0.1);
}

.enhance-icon {
    font-size: 1rem;
}

.enhance-text {
    font-size: 0.9rem;
    color: var(--accent-gold);
}

.enhance-arrow {
    font-size: 0.7rem;
    color: var(--text-muted);
    transition: transform var(--transition-fast);
}

.enhance-arrow.open {
    transform: rotate(180deg);
}

.enhance-fields {
    display: none;
    padding: 1.2rem;
    background: var(--bg-tertiary);
    animation: fadeInUp 0.3s ease;
}

.enhance-fields.open {
    display: block;
}

.enhance-field {
    margin-bottom: 1.2rem;
}

.enhance-field:last-child {
    margin-bottom: 0;
}

.field-label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: 0.6rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.field-icon {
    font-size: 0.9rem;
}

.field-hint {
    margin-left: auto;
    font-size: 0.7rem;
    color: var(--text-muted);
    font-style: italic;
}

/* Option Chips */
.field-options {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.option-chip {
    padding: 0.4rem 0.8rem;
    background: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.option-chip:hover {
    border-color: rgba(212, 175, 55, 0.4);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.option-chip.selected {
    background: rgba(212, 175, 55, 0.15);
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

/* Color Options */
.color-options {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.color-chip {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--chip-color);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.color-chip:hover {
    transform: scale(1.15);
    box-shadow: 0 0 12px rgba(212, 175, 55, 0.3);
}

.color-chip.selected {
    border-color: var(--accent-gold);
    box-shadow: 0 0 15px rgba(212, 175, 55, 0.5);
    transform: scale(1.1);
}

.color-chip.selected::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.8rem;
    color: white;
    text-shadow: 0 0 3px rgba(0, 0, 0, 0.8);
}

/* Size Slider */
.size-slider-wrapper {
    padding: 0 0.5rem;
}

.size-slider {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: linear-gradient(to right,
            rgba(212, 175, 55, 0.2) 0%,
            var(--accent-gold) 50%,
            rgba(212, 175, 55, 0.2) 100%);
    border-radius: 3px;
    outline: none;
    cursor: pointer;
}

.size-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--gradient-gold);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
    transition: transform var(--transition-fast);
}

.size-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.size-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--gradient-gold);
    border-radius: 50%;
    border: none;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
}

.size-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 0.5rem;
    font-size: 0.7rem;
    color: var(--text-muted);
}

.size-labels span:nth-child(2) {
    color: var(--accent-gold);
    font-weight: 500;
}

/* Footer */
.footer {
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
    border-top: var(--border-subtle);
}

.bagua-wheel {
    font-size: 1.3rem;
    letter-spacing: 0.25em;
    color: var(--accent-gold);
    opacity: 0.5;
    margin-bottom: 0.5rem;
}

.footer p {
    color: var(--text-muted);
    font-size: 0.85rem;
    letter-spacing: 0.15em;
}