/* ===================================
   CSS RESET & BASE STYLES
   =================================== */

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

:root {
    /* Dark Mode Colors */
    --background: #0F172A;
    --background-secondary: #1E293B;
    --primary: #3B82F6;
    --success: #10B981;
    --danger: #EF4444;
    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --border: #334155;
    --card-bg: #1E293B;
    --card-hover: #334155;
    
    /* Chart Specific */
    --chart-line: #3B82F6;
    --chart-prediction: #F59E0B;
    --chart-volume: rgba(156, 163, 175, 0.5);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ===================================
   UTILITY CLASSES
   =================================== */

.hidden {
    display: none !important;
}

.container {
    width: 100%;
    max-width: 100%;
    padding: 16px;
    margin: 0 auto;
}

@media (min-width: 641px) {
    .container {
        padding: 24px;
    }
}

@media (min-width: 1025px) {
    .container {
        max-width: 1280px;
        padding: 48px;
    }
}

/* ===================================
   HEADER
   =================================== */

.header {
    background: linear-gradient(135deg, #1E293B 0%, #334155 100%);
    color: white;
    padding: 16px 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--border);
}

.logo {
    font-size: 20px;
    font-weight: 700;
    text-align: center;
}

@media (min-width: 641px) {
    .logo {
        font-size: 24px;
    }
}

/* ===================================
   MAIN CONTENT
   =================================== */

.main-content {
    flex: 1;
    padding: 24px 0;
}

/* ===================================
   SEARCH SECTION
   =================================== */

.search-section {
    margin-bottom: 32px;
}

.search-container {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.search-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.data-disclaimer {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 8px;
    padding: 12px 16px;
    margin-bottom: 24px;
    font-size: 14px;
    color: var(--text-secondary);
    text-align: center;
}

@media (min-width: 641px) {
    .search-title {
        font-size: 28px;
    }
    
    .data-disclaimer {
        font-size: 15px;
        padding: 14px 20px;
    }
}

.search-wrapper {
    position: relative;
}

.search-input {
    width: 100%;
    font-size: 16px;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: 8px;
    outline: none;
    transition: all 0.3s ease;
    font-family: inherit;
    background-color: var(--card-bg);
    color: var(--text-primary);
}

.search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.search-input::placeholder {
    color: var(--text-secondary);
}

@media (min-width: 641px) {
    .search-input {
        font-size: 18px;
        padding: 16px 24px;
    }
}

.search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-top: 8px;
    max-height: 400px;
    overflow-y: auto;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
    z-index: 100;
    display: none;
}

.search-results.active {
    display: block;
}

.search-result-item {
    padding: 12px 16px;
    cursor: pointer;
    border-bottom: 1px solid var(--border);
    text-align: left;
    transition: background-color 0.2s ease;
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-item:hover {
    background-color: var(--card-hover);
}

.result-symbol {
    font-weight: 600;
    color: var(--primary);
    font-size: 16px;
}

.result-name {
    color: var(--text-secondary);
    font-size: 14px;
    margin-top: 2px;
}

.result-sector {
    display: inline-block;
    font-size: 12px;
    color: var(--text-secondary);
    background-color: var(--card-bg);
    padding: 2px 8px;
    border-radius: 4px;
    margin-top: 4px;
}

.no-results {
    padding: 24px;
    text-align: center;
    color: var(--text-secondary);
}

/* ===================================
   SKELETON LOADER
   =================================== */

.skeleton-loader {
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.skeleton-line {
    height: 20px;
    background: var(--border);
    border-radius: 4px;
    margin-bottom: 12px;
}

.skeleton-title {
    width: 60%;
    height: 32px;
    margin-bottom: 16px;
}

.skeleton-text {
    width: 80%;
}

.skeleton-chart {
    height: 300px;
    background: var(--border);
    border-radius: 8px;
    margin-top: 24px;
}

@media (min-width: 641px) {
    .skeleton-chart {
        height: 400px;
    }
}

/* ===================================
   STOCK SECTION
   =================================== */

.stock-section {
    margin-top: 32px;
}

.stock-layout {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

@media (min-width: 1025px) {
    .stock-layout {
        flex-direction: row;
        gap: 32px;
    }
}

/* ===================================
   STOCK INFO CARD
   =================================== */

.stock-info-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 16px;
    border: 1px solid var(--border);
}

@media (min-width: 641px) {
    .stock-info-card {
        padding: 24px;
    }
}

@media (min-width: 1025px) {
    .stock-info-card {
        flex: 0 0 30%;
    }
}

.stock-header {
    margin-bottom: 24px;
}

.stock-symbol {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.stock-name {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.stock-sector {
    display: inline-block;
    font-size: 12px;
    color: var(--primary);
    background-color: rgba(59, 130, 246, 0.15);
    padding: 4px 12px;
    border-radius: 16px;
    font-weight: 500;
}

.price-section {
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
}

.current-price {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

@media (min-width: 641px) {
    .current-price {
        font-size: 40px;
    }
}

@media (min-width: 1025px) {
    .current-price {
        font-size: 48px;
    }
}

.price-change {
    font-size: 20px;
    font-weight: 600;
}

@media (min-width: 641px) {
    .price-change {
        font-size: 24px;
    }
}

.price-change.positive {
    color: var(--success);
}

.price-change.negative {
    color: var(--danger);
}

.stock-details {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
}

.detail-label {
    font-size: 14px;
    color: var(--text-secondary);
}

.detail-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

/* ===================================
   CHART SECTION
   =================================== */

.chart-section {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 16px;
    border: 1px solid var(--border);
}

@media (min-width: 641px) {
    .chart-section {
        padding: 24px;
    }
}

@media (min-width: 1025px) {
    .chart-section {
        flex: 1;
    }
}

.chart-header {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 24px;
}

@media (min-width: 641px) {
    .chart-header {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

.chart-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.time-range-selector {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

.time-btn {
    padding: 6px 12px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid var(--border);
    background: var(--background-secondary);
    color: var(--text-secondary);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.time-btn:hover {
    background-color: var(--card-hover);
    transform: translateY(-1px);
}

.time-btn.active {
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
}

.time-btn:active {
    transform: scale(0.95);
}

.chart-container {
    height: 250px;
    position: relative;
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

@media (min-width: 641px) {
    .chart-container {
        height: 350px;
    }
}

@media (min-width: 1025px) {
    .chart-container {
        height: 450px;
    }
}

/* ===================================
   PREDICTION PANEL
   =================================== */

.prediction-panel {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 24px;
    margin-top: 32px;
    color: var(--text-primary);
    border: 1px solid var(--border);
}

@media (min-width: 641px) {
    .prediction-panel {
        padding: 32px;
    }
}

.prediction-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 24px;
    text-align: center;
}

.prediction-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

@media (min-width: 641px) {
    .prediction-cards {
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
}

.prediction-card {
    background: var(--background-secondary);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    border: 1px solid var(--border);
    transition: all 0.2s ease;
}

.prediction-card:hover {
    transform: translateY(-4px);
}

.prediction-period {
    font-size: 14px;
    opacity: 0.9;
    margin-bottom: 8px;
    font-weight: 500;
}

.prediction-price {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 4px;
}

@media (min-width: 641px) {
    .prediction-price {
        font-size: 32px;
    }
}

.prediction-change {
    font-size: 16px;
    font-weight: 600;
    opacity: 0.9;
}

.prediction-details {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 16px;
}

.confidence-level {
    font-size: 16px;
    margin-bottom: 16px;
}

.prediction-factors {
    font-size: 16px;
}

.prediction-factors ul {
    margin-top: 8px;
    margin-left: 20px;
}

.prediction-factors li {
    margin-bottom: 6px;
    opacity: 0.95;
}

.disclaimer {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 8px;
    padding: 16px;
    font-size: 14px;
    line-height: 1.5;
    color: #FCA5A5;
}

/* ===================================
   ERROR MESSAGE
   =================================== */

.error-message {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    max-width: 500px;
    width: 90%;
}

.error-content {
    background: var(--danger);
    color: white;
    padding: 16px 20px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
}

.error-icon {
    font-size: 24px;
}

.error-content p {
    flex: 1;
    margin: 0;
    font-size: 14px;
}

.error-close {
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.8;
    transition: opacity 0.2s ease;
}

.error-close:hover {
    opacity: 1;
}

/* ===================================
   FOOTER
   =================================== */

.footer {
    background-color: var(--card-bg);
    border-top: 1px solid var(--border);
    padding: 24px 0;
    margin-top: 48px;
    text-align: center;
}

.footer p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ===================================
   ANIMATIONS
   =================================== */

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

.stock-content {
    animation: fadeIn 0.5s ease;
}

/* ===================================
   SCROLLBAR STYLING
   =================================== */

.search-results::-webkit-scrollbar {
    width: 8px;
}

.search-results::-webkit-scrollbar-track {
    background: var(--card-bg);
}

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

.search-results::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}