:root {
    --primary-red: #de2910;
    --primary-gold: #ffde00;
    --deep-blue: #1a237e;
    --bg-color: #fdfbf7;
    --text-dark: #2c3e50;
    --text-light: #596b7e;
    --glass-bg: rgba(255, 255, 255, 0.9);
    --glass-border: rgba(255, 255, 255, 0.5);
    --shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
    --font-title: 'Ma Shan Zheng', cursive;
    --font-body: 'Outfit', sans-serif;
    --font-serif: 'Noto Serif SC', serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

body {
    background-color: var(--bg-color);
    background-image:
        radial-gradient(circle at 10% 20%, rgba(222, 41, 16, 0.03) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(255, 222, 0, 0.05) 0%, transparent 20%),
        radial-gradient(circle at 50% 50%, rgba(26, 35, 126, 0.02) 0%, transparent 30%);
    color: var(--text-dark);
    font-family: var(--font-body);
    height: 100vh;
    overflow: hidden;
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    max-width: 1600px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
    border: 1px solid var(--glass-border);
}

.header-content h1 {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.header-content .highlight {
    color: var(--primary-red);
    font-family: var(--font-title);
    font-size: 2rem;
    margin-left: 10px;
}

.subtitle {
    font-family: var(--font-body);
    color: var(--text-light);
    font-size: 0.9rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.progress-bar {
    position: relative;
    width: 250px;
    height: 30px;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 15px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--primary-red), var(--primary-gold));
    transition: width 0.5s ease;
    border-radius: 15px;
}

.progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-dark);
}

/* Main Stage */
.main-stage {
    display: flex;
    gap: 20px;
    flex: 1;
    overflow: hidden;
}

/* Toolbox (Left Sidebar) */
.toolbox {
    width: 280px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    box-shadow: var(--shadow);
    border: 1px solid var(--glass-border);
    padding: 20px;
    overflow-y: auto;
}

/* Proof Workspace (Center) */
.proof-workspace {
    flex: 1;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    box-shadow: var(--shadow);
    border: 1px solid var(--glass-border);
    padding: 25px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.workspace-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--primary-gold);
}

.workspace-header h2 {
    font-family: var(--font-title);
    font-size: 1.8rem;
    color: var(--primary-red);
}

.workspace-controls {
    display: flex;
    gap: 10px;
}

.control-btn {
    padding: 8px 16px;
    background: white;
    border: 1px solid #ddd;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.control-btn:hover {
    background: #f5f5f5;
    transform: translateY(-2px);
}

/* Proof Table */
.proof-table-container {
    flex: 1;
    overflow-y: auto;
    margin-bottom: 20px;
}

.proof-table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-mono);
}

.proof-table thead {
    background: linear-gradient(135deg, var(--primary-red), #c41e0a);
    color: white;
    position: sticky;
    top: 0;
    z-index: 10;
}

.proof-table th {
    padding: 12px;
    text-align: left;
    font-weight: 600;
}

.proof-table tbody tr {
    border-bottom: 1px solid #e0e0e0;
    transition: all 0.2s;
    cursor: pointer;
}

.proof-table tbody tr:hover {
    background: rgba(222, 41, 16, 0.05);
}

.proof-table tbody tr.selected {
    background: rgba(255, 222, 0, 0.2);
    border-left: 4px solid var(--primary-gold);
}

.proof-table td {
    padding: 12px;
}

.proof-table td:nth-child(1) {
    width: 80px;
    font-weight: bold;
    color: var(--primary-red);
}

.proof-table td:nth-child(2) {
    font-size: 1rem;
}

.proof-table td:nth-child(3) {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Action Panel */
.action-panel {
    padding: 20px;
    background: #f8f9fa;
    border-radius: 12px;
    border: 2px dashed #ddd;
}

.action-prompt {
    margin-bottom: 15px;
    text-align: center;
}

.action-prompt p {
    color: var(--text-light);
    font-size: 1rem;
}

.action-buttons {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.action-btn {
    padding: 12px 30px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.action-btn.primary {
    background: linear-gradient(135deg, var(--primary-red), #c41e0a);
    color: white;
}

.action-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(222, 41, 16, 0.3);
}

.action-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Right Sidebar */
.sidebar {
    width: 320px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    box-shadow: var(--shadow);
    border: 1px solid var(--glass-border);
    padding: 20px;
    overflow-y: auto;
}

/* Panel Sections */
.panel-section {
    margin-bottom: 25px;
}

.panel-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-gold);
}

.panel-icon {
    font-size: 1.4rem;
}

.panel-header h3 {
    font-size: 1.1rem;
    color: var(--primary-red);
    font-weight: 700;
}

/* Premise List */
.premise-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.premise-item {
    padding: 10px;
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    transition: all 0.2s;
}

.premise-item:hover {
    border-color: var(--primary-gold);
    box-shadow: 0 2px 8px rgba(255, 222, 0, 0.2);
}

/* Rules List */
.rules-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.rule-item {
    padding: 12px;
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
}

.rule-item strong {
    display: block;
    color: var(--deep-blue);
    margin-bottom: 5px;
}

.rule-item p {
    font-size: 0.85rem;
    color: var(--text-light);
    margin: 0;
}

/* Symbol List */
.symbol-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.symbol-item {
    padding: 8px;
    background: white;
    border-radius: 6px;
    font-size: 0.9rem;
}

/* Ideology Content */
.ideology-content h4 {
    color: var(--primary-red);
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.ideology-content p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-light);
    margin-bottom: 12px;
}

/* Goal Content */
.goal-content {
    font-size: 0.95rem;
}

.goal-formula {
    text-align: center;
    font-size: 1.3rem;
    margin: 15px 0;
    padding: 15px;
    background: white;
    border-radius: 8px;
}

/* Achievements */
.achievement-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.achievement-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    background: white;
    border-radius: 8px;
    border: 2px solid #e0e0e0;
    transition: all 0.3s;
}

.achievement-item.unlocked {
    border-color: var(--primary-gold);
    background: linear-gradient(135deg, #fff9e6, #ffffff);
    animation: unlock 0.5s ease;
}

@keyframes unlock {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }

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

.achievement-icon {
    font-size: 1.5rem;
}

.achievement-name {
    flex: 1;
    font-weight: 600;
    font-size: 0.9rem;
}

.achievement-status {
    font-size: 1.2rem;
}

/* Success Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.modal.hidden {
    display: none;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.modal-content {
    background: white;
    padding: 40px;
    border-radius: 20px;
    max-width: 600px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: slideIn 0.5s ease;
}

@keyframes slideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }

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

.modal-content h2 {
    font-family: var(--font-title);
    color: var(--primary-red);
    font-size: 2rem;
    margin-bottom: 20px;
}

.success-icons {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin: 30px 0;
}

.success-icon {
    font-size: 4rem;
    animation: bounce 1s infinite;
}

.success-icon:nth-child(2) {
    animation-delay: 0.2s;
}

.success-icon:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes bounce {

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

    50% {
        transform: translateY(-20px);
    }
}

.success-message {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.spirit-quote {
    font-family: var(--font-serif);
    font-style: italic;
    color: var(--primary-red);
    font-size: 1rem;
    margin: 20px 0;
    padding: 15px;
    background: #fff5f5;
    border-left: 4px solid var(--primary-red);
    border-radius: 8px;
}