/* ========================================
   DSL Research Tool - Modern Design System
   ======================================== */

/* CSS Variables for Light/Dark Mode */
:root {
    /* Brand Colors */
    --dsl-primary-blue: #00A8E8;
    --dsl-primary-orange: #FF8C00;
    --dsl-success-green: #4CAF50;
    --dsl-warning-red: #FF5252;
    --dsl-info-blue: #2196F3;
    
    /* Light Mode Colors */
    --bg-primary: #F5F7FA;
    --bg-card: #FFFFFF;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-muted: #999999;
    --border-color: #E0E0E0;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
    
    /* Card Specific Colors */
    --grade-a: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
    --grade-b: linear-gradient(135deg, #2196F3 0%, #1976D2 100%);
    --grade-c: linear-gradient(135deg, #FFC107 0%, #FFA000 100%);
    --grade-d: linear-gradient(135deg, #FF9800 0%, #F57C00 100%);
    --grade-f: linear-gradient(135deg, #FF5252 0%, #E53935 100%);
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1a1a1a;
        --bg-card: #2d2d2d;
        --text-primary: #e0e0e0;
        --text-secondary: #b0b0b0;
        --text-muted: #808080;
        --border-color: #404040;
        --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
        --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
        --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);
    }
}

[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-card: #2d2d2d;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --text-muted: #808080;
    --border-color: #404040;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);
}

/* ========================================
   Container & Layout
   ======================================== */

.dsl-researchx-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    background: var(--bg-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

.dsl-researchx-error {
    padding: 20px;
    background: #fff3cd;
    border: 1px solid #ffc107;
    border-radius: 8px;
    color: #856404;
    text-align: center;
}

/* ========================================
   Search Section
   ======================================== */

.dsl-search-section {
    background: var(--bg-card);
    padding: 40px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    margin-bottom: 40px;
    display: flex;
    gap: 16px;
    align-items: center;
}

.dsl-keyword-input {
    flex: 1;
    padding: 18px 24px;
    font-size: 16px;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: all 0.3s ease;
    outline: none;
}

.dsl-keyword-input:focus {
    border-color: var(--dsl-primary-blue);
    background: var(--bg-card);
    box-shadow: 0 0 0 4px rgba(0, 168, 232, 0.1);
}

.dsl-keyword-input::placeholder {
    color: var(--text-muted);
}

.dsl-country-select {
    padding: 18px 20px;
    font-size: 16px;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    background: var(--bg-primary);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    outline: none;
    min-width: 180px;
}

.dsl-country-select:hover,
.dsl-country-select:focus {
    border-color: var(--dsl-primary-blue);
}

.dsl-search-button {
    padding: 18px 48px;
    font-size: 16px;
    font-weight: 600;
    background: #000000;
    color: #ffffff;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.dsl-search-button:hover {
    background: #333333;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.dsl-search-button:active {
    transform: translateY(0);
}

.dsl-search-button:disabled {
    background: #cccccc;
    cursor: not-allowed;
    transform: none;
}

/* ========================================
   Loading Overlay
   ======================================== */

.dsl-loading-overlay {
    background: var(--bg-card);
    padding: 80px 40px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    text-align: center;
    margin-bottom: 40px;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    margin: 0 auto 24px;
    border: 4px solid var(--border-color);
    border-top-color: var(--dsl-primary-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-text {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 8px 0;
}

.loading-subtext {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0;
}

/* ========================================
   Results Grid
   ======================================== */

.dsl-results-section {
    margin-bottom: 40px;
}

.dsl-results-grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.card-row-large {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.card-row-small {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

/* ========================================
   Result Cards - Base Styles
   ======================================== */

.result-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 32px;
    box-shadow: var(--shadow-md);
    position: relative;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    opacity: 0;
    transform: translateY(20px);
}

.result-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.result-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.result-card.large {
    min-height: 200px;
}

.result-card.small {
    min-height: 180px;
}

.card-label {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 16px;
    display: block;
}

.card-value {
    font-size: 48px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.result-card.small .card-value {
    font-size: 36px;
}

/* ========================================
   Info Icon
   ======================================== */

.info-icon {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--border-color);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-style: normal;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.info-icon:hover {
    background: var(--dsl-primary-blue);
    color: #ffffff;
    transform: scale(1.1);
}

.info-icon.active {
    background: var(--dsl-primary-blue);
    color: #ffffff;
}

/* ========================================
   Grade Card
   ======================================== */

.grade-card .grade-value {
    font-size: 72px;
    background: var(--grade-a);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.grade-card[data-grade="A+"],
.grade-card[data-grade="A"] {
    .grade-value { background: var(--grade-a); }
}

.grade-card[data-grade="B"] {
    .grade-value { background: var(--grade-b); }
}

.grade-card[data-grade="C"] {
    .grade-value { background: var(--grade-c); }
}

.grade-card[data-grade="D"],
.grade-card[data-grade="F"] {
    .grade-value { background: var(--grade-f); }
}

/* ========================================
   Demand Card
   ======================================== */

.demand-card .demand-value {
    color: var(--text-primary);
}

.demand-card .trend-arrow {
    position: absolute;
    top: 20px;
    right: 50px;
    font-size: 24px;
    font-style: normal;
}

.demand-card .trend-arrow.up {
    color: var(--dsl-success-green);
}

.demand-card .trend-arrow.down {
    color: var(--dsl-warning-red);
}

/* ========================================
   Evergreen/Seasonal Card
   ======================================== */

.evergreen-card .card-icon-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.evergreen-card .card-icon {
    font-size: 64px;
    line-height: 1;
}

.evergreen-card .seasons-text {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
}

/* ========================================
   Price Card
   ======================================== */

.price-card .price-value {
    color: var(--text-primary);
}

.price-card .trend-arrow {
    position: absolute;
    bottom: 20px;
    right: 20px;
    font-size: 20px;
    font-style: normal;
}

.price-card .trend-arrow.up {
    color: var(--dsl-success-green);
}

.price-card .trend-arrow.down {
    color: var(--dsl-warning-red);
}

/* ========================================
   Demographic Card
   ======================================== */

.demographic-card .demographic-value {
    font-size: 48px;
    color: var(--dsl-primary-orange);
}

.demographic-card[data-tier="budget"] .demographic-value {
    color: var(--dsl-success-green);
}

.demographic-card[data-tier="middle"] .demographic-value {
    color: var(--dsl-primary-orange);
}

.demographic-card[data-tier="affluent"] .demographic-value {
    color: #FFD700;
}

/* ========================================
   Brand Loyalty Card
   ======================================== */

.loyalty-card {
    position: relative;
    overflow: hidden;
}

.loyalty-card[data-loyalty="YES"] {
    background: linear-gradient(135deg, #FF5252 0%, #E53935 100%);
}

.loyalty-card[data-loyalty="NO"] {
    background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
}

.loyalty-card[data-loyalty="YES"] .card-label,
.loyalty-card[data-loyalty="YES"] .loyalty-value,
.loyalty-card[data-loyalty="NO"] .card-label,
.loyalty-card[data-loyalty="NO"] .loyalty-value {
    color: #ffffff;
}

.loyalty-card .loyalty-value {
    font-size: 56px;
}

/* ========================================
   Info Boxes
   ======================================== */

.dsl-info-boxes {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.info-box {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 24px 32px;
    border-left: 4px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    display: none;
    animation: slideDown 0.3s ease;
}

.info-box.visible {
    display: block;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.info-box.success {
    border-left-color: var(--dsl-success-green);
    background: rgba(76, 175, 80, 0.05);
}

.info-box.fail {
    border-left-color: var(--dsl-warning-red);
    background: rgba(255, 82, 82, 0.05);
}

.info-box.info {
    border-left-color: var(--dsl-info-blue);
    background: rgba(33, 150, 243, 0.05);
}

.info-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 12px 0;
}

.info-message {
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin: 0;
}

/* ========================================
   Debug Section
   ======================================== */

.dsl-debug-section {
    margin-top: 40px;
    background: var(--bg-card);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    border: 2px solid var(--dsl-info-blue);
    overflow: hidden;
}

.debug-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 32px;
    background: rgba(33, 150, 243, 0.1);
    border-bottom: 1px solid var(--border-color);
}

.debug-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.debug-copy-btn {
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 600;
    background: var(--dsl-info-blue);
    color: #ffffff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.debug-copy-btn:hover {
    background: #1976D2;
    transform: translateY(-1px);
}

.debug-copy-btn:active {
    transform: translateY(0);
}

.debug-json {
    margin: 0;
    padding: 24px 32px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Courier New', Courier, monospace;
    font-size: 13px;
    line-height: 1.6;
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* ========================================
   Error Message
   ======================================== */

.dsl-error-message {
    background: var(--bg-card);
    padding: 60px 40px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    text-align: center;
    border: 2px solid var(--dsl-warning-red);
}

.dsl-error-message .error-icon {
    font-size: 48px;
    margin-bottom: 16px;
    display: block;
}

.dsl-error-message h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 12px 0;
}

.dsl-error-message .error-details {
    font-size: 16px;
    color: var(--text-secondary);
    margin: 0;
}

/* ========================================
   Responsive Design
   ======================================== */

/* Tablet */
@media (max-width: 1024px) {
    .card-row-small {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile */
@media (max-width: 768px) {
    .dsl-researchx-container {
        padding: 20px 16px;
    }
    
    .dsl-search-section {
        padding: 24px;
        flex-direction: column;
    }
    
    .dsl-keyword-input,
    .dsl-country-select,
    .dsl-search-button {
        width: 100%;
    }
    
    .card-row-large {
        grid-template-columns: 1fr;
    }
    
    .card-row-small {
        grid-template-columns: 1fr;
    }
    
    .result-card {
        padding: 24px;
    }
    
    .card-value {
        font-size: 36px;
    }
    
    .result-card.small .card-value {
        font-size: 28px;
    }
    
    .grade-card .grade-value {
        font-size: 56px;
    }
    
    .info-box {
        padding: 20px;
    }
    
    .debug-header {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }
    
    .debug-copy-btn {
        width: 100%;
    }
    
    .debug-json {
        font-size: 11px;
        padding: 16px;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .dsl-search-section {
        padding: 20px;
    }
    
    .dsl-keyword-input,
    .dsl-country-select,
    .dsl-search-button {
        padding: 14px 20px;
        font-size: 14px;
    }
    
    .result-card {
        min-height: 150px;
    }
    
    .card-value {
        font-size: 32px;
    }
}

/* ========================================
   Animations
   ======================================== */

/* Staggered card reveal */
.result-card:nth-child(1) { animation-delay: 0.1s; }
.result-card:nth-child(2) { animation-delay: 0.2s; }
.result-card:nth-child(3) { animation-delay: 0.3s; }
.result-card:nth-child(4) { animation-delay: 0.4s; }
.result-card:nth-child(5) { animation-delay: 0.5s; }
.result-card:nth-child(6) { animation-delay: 0.6s; }

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-card.visible {
    animation: fadeInUp 0.5s ease forwards;
}