/* ===== VARIABLES CSS ===== */
:root {
    /* Estados de bienestar */
    --poverty-extreme: #c0392b;
    --poverty-moderate: #e74c3c;
    --vulnerable: #f39c12;
    --stable: #f1c40f;
    --developing: #2ecc71;
    --prosperous: #27ae60;

    /* UI corporativa */
    --gobblue: #1a5276;
    --gobblue-light: #3498db;
    --gobblue-dark: #0d2840;
    --gobgreen: #27ae60;
    --goborange: #f39c12;
    --gobred: #c0392b;

    /* Fondos y textos */
    --bg-primary: #0a1628;
    --bg-secondary: #112240;
    --bg-tertiary: #1d3557;
    --text-primary: #e6f1ff;
    --text-secondary: #8892b0;
    --text-muted: #495670;

    /* Bordes y sombras */
    --border-color: #233554;
    --shadow-color: rgba(0, 0, 0, 0.3);

    /* Espaciado */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    /* Bordes */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Transiciones */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

/* ===== RESET BÁSICO ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--bg-primary);
}

/* ===== LAYOUT PRINCIPAL ===== */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    height: 60px;
}

.header-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.header-brand i {
    font-size: 1.8em;
    color: var(--gobblue-light);
}

.header-brand h1 {
    font-size: 1.4em;
    font-weight: 600;
    color: var(--text-primary);
}

.header-subtitle {
    font-size: 0.85em;
    color: var(--text-secondary);
    margin-left: var(--spacing-sm);
    padding-left: var(--spacing-sm);
    border-left: 1px solid var(--border-color);
}

.header-nav {
    display: flex;
    gap: var(--spacing-sm);
}

.nav-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.9em;
}

.nav-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.nav-btn.active {
    background: var(--gobblue);
    color: white;
    border-color: var(--gobblue-light);
}

.nav-btn i {
    margin-right: var(--spacing-xs);
}

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.icon-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.icon-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

/* ===== MAIN LAYOUT ===== */
.app-main {
    display: flex;
    height: calc(100vh - 60px);
}

.canvas-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
}

.canvas-container {
    flex: 1;
    position: relative;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

#game-canvas {
    max-width: 100%;
    max-height: 100%;
    image-rendering: pixelated;
}

.canvas-overlay {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.6);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.85em;
    color: var(--text-primary);
}

/* ===== METRICS BAR ===== */
.metrics-bar {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.metric {
    flex: 1;
    text-align: center;
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
}

.metric-label {
    display: block;
    font-size: 0.75em;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metric-value {
    display: block;
    font-size: 1.4em;
    font-weight: 600;
    color: var(--text-primary);
    margin: var(--spacing-xs) 0;
}

.metric-trend {
    font-size: 0.85em;
}

.metric-trend.up { color: var(--gobgreen); }
.metric-trend.down { color: var(--gobred); }

/* ===== CONTROLS PANEL ===== */
.controls-panel {
    width: 320px;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    overflow-y: auto;
    padding: var(--spacing-md);
}

.panel-section {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.panel-section:last-child {
    border-bottom: none;
}

.panel-title {
    font-size: 0.9em;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.panel-title i {
    color: var(--gobblue-light);
}

/* ===== CONTROL ROWS ===== */
.control-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.control-row label {
    flex: 0 0 100px;
    font-size: 0.85em;
    color: var(--text-secondary);
}

.control-row input[type="range"] {
    flex: 1;
    height: 6px;
    -webkit-appearance: none;
    background: var(--bg-tertiary);
    border-radius: 3px;
    outline: none;
}

.control-row input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--gobblue-light);
    border-radius: 50%;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.control-row input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.slider-value {
    flex: 0 0 50px;
    text-align: right;
    font-size: 0.85em;
    color: var(--gobblue-light);
    font-family: monospace;
}

.control-row select {
    flex: 1;
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
}

/* ===== BUTTONS ===== */
.ctrl-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.ctrl-btn:hover:not(:disabled) {
    background: var(--gobblue);
    border-color: var(--gobblue-light);
}

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

.ctrl-btn.primary {
    background: var(--gobblue);
    border-color: var(--gobblue-light);
}

.ctrl-btn.primary:hover:not(:disabled) {
    background: var(--gobblue-light);
}

.ctrl-btn.danger {
    border-color: var(--gobred);
}

.ctrl-btn.danger:hover:not(:disabled) {
    background: var(--gobred);
}

.ctrl-btn.full-width {
    width: 100%;
    margin-bottom: var(--spacing-sm);
}

.playback-controls {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.playback-controls .ctrl-btn {
    flex: 1;
}

/* ===== SCENARIO BUTTONS ===== */
.scenario-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.scenario-btn {
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.85em;
    transition: all var(--transition-fast);
}

.scenario-btn:hover {
    background: var(--gobblue);
    color: white;
    border-color: var(--gobblue-light);
}

/* ===== TOOL BUTTONS ===== */
.tool-grid {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.tool-btn {
    flex: 1;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 1.2em;
    transition: all var(--transition-fast);
}

.tool-btn:hover {
    border-color: var(--gobblue-light);
    color: var(--gobblue-light);
}

.tool-btn.active {
    background: var(--gobblue);
    border-color: var(--gobblue-light);
    color: white;
}

/* ===== BUDGET DISPLAY ===== */
.budget-display {
    background: var(--bg-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
}

.budget-label {
    font-size: 0.85em;
    color: var(--text-secondary);
}

.budget-value {
    font-size: 1.4em;
    font-weight: 600;
    color: var(--gobgreen);
    margin-left: var(--spacing-sm);
}

.budget-bar {
    height: 8px;
    background: var(--bg-primary);
    border-radius: 4px;
    margin-top: var(--spacing-sm);
    overflow: hidden;
}

.budget-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--gobgreen), var(--goborange));
    border-radius: 4px;
    transition: width var(--transition-normal);
}

/* ===== CHALLENGE SECTION ===== */
.challenge-info {
    background: var(--bg-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.challenge-name {
    font-weight: 600;
    color: var(--goborange);
    margin-bottom: var(--spacing-sm);
}

.challenge-objective {
    font-size: 0.9em;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.challenge-progress {
    display: flex;
    justify-content: space-between;
    font-size: 0.85em;
    color: var(--text-muted);
}

.challenge-stars {
    text-align: center;
    margin-top: var(--spacing-sm);
    font-size: 1.2em;
}

.challenge-stars i {
    color: var(--text-muted);
    margin: 0 2px;
}

.challenge-stars i.earned {
    color: var(--goborange);
}

.level-select {
    display: flex;
    gap: var(--spacing-xs);
}

.level-btn {
    flex: 1;
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.level-btn:hover {
    background: var(--gobblue);
    color: white;
}

.level-btn.completed {
    border-color: var(--gobgreen);
    color: var(--gobgreen);
}

.level-btn.active {
    background: var(--goborange);
    border-color: var(--goborange);
    color: white;
}

/* ===== OPTIMAL POINTS ===== */
.optimal-points {
    max-height: 200px;
    overflow-y: auto;
}

.optimal-point {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-xs);
    font-size: 0.85em;
}

.optimal-point-coords {
    color: var(--text-secondary);
}

.optimal-point-score {
    color: var(--gobgreen);
    font-weight: 600;
}

/* ===== MODAL ===== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 1.2em;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5em;
    color: var(--text-secondary);
    cursor: pointer;
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
}

.modal-body h3 {
    color: var(--gobblue-light);
    margin: var(--spacing-md) 0 var(--spacing-sm);
}

.modal-body h3:first-child {
    margin-top: 0;
}

.modal-body p, .modal-body ul, .modal-body ol {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.modal-body li {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-xs);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .header-subtitle {
        display: none;
    }

    .nav-btn span {
        display: none;
    }

    .controls-panel {
        width: 280px;
    }
}

@media (max-width: 768px) {
    .app-main {
        flex-direction: column;
    }

    .controls-panel {
        width: 100%;
        height: auto;
        max-height: 40vh;
        border-left: none;
        border-top: 1px solid var(--border-color);
    }

    .canvas-section {
        flex: 0 0 60vh;
    }
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}