/* styles.css - AWS ALB Log Analyzer Styles */

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

:root {
    --primary-color: #667eea;
    --primary-dark: #5a67d8;
    --secondary-color: #764ba2;
    --success-color: #48bb78;
    --error-color: #f56565;
    --warning-color: #ed8936;
    --info-color: #4299e1;
    --light-color: #f7fafc;
    --light-gray: #edf2f7;
    --medium-gray: #a0aec0;
    --dark-color: #2d3748;
    --text-color: #2d3748;
    --border-color: #e2e8f0;
    --shadow-light: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    --shadow-medium: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-heavy: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
    --border-radius: 12px;
    --border-radius-large: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --backdrop-blur: blur(20px);
}

/* Base Styles */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    min-height: 100vh;
    color: var(--text-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    text-align: center;
    color: white;
    margin-bottom: 40px;
    padding: 50px 0;
}

.header h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    margin-bottom: 20px;
    text-shadow: 2px 2px 20px rgba(0,0,0,0.3);
    font-weight: 800;
    letter-spacing: -0.02em;
}

.header p {
    font-size: clamp(1.1rem, 3vw, 1.4rem);
    opacity: 0.95;
    font-weight: 300;
    max-width: 600px;
    margin: 0 auto;
}

/* Card Component */
.card {
    background: rgba(255, 255, 255, 0.98);
    border-radius: var(--border-radius-large);
    padding: 40px;
    margin-bottom: 30px;
    box-shadow: var(--shadow-heavy);
    backdrop-filter: var(--backdrop-blur);
    border: 1px solid rgba(255,255,255,0.3);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--border-radius-large) var(--border-radius-large) 0 0;
}

.card h2 {
    color: var(--dark-color);
    margin-bottom: 25px;
    font-size: 1.75rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Upload Zone */
.upload-zone {
    border: 3px dashed var(--primary-color);
    border-radius: var(--border-radius-large);
    padding: 60px 40px;
    text-align: center;
    background: linear-gradient(145deg, #f8f9ff, #e8ebff);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.upload-zone::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.6), transparent);
    transition: left 0.6s;
}

.upload-zone:hover {
    border-color: var(--primary-dark);
    background: linear-gradient(145deg, #f0f2ff, #dde2ff);
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.upload-zone:hover::before {
    left: 100%;
}

.upload-zone.dragover {
    border-color: var(--primary-dark);
    background: linear-gradient(145deg, #e6e9ff, #d1d7ff);
    transform: scale(1.02);
    box-shadow: var(--shadow-heavy);
}

.upload-icon {
    font-size: 5rem;
    margin-bottom: 25px;
    animation: bounce 3s infinite;
    display: block;
}

.upload-zone h3 {
    font-size: 1.5rem;
    color: var(--dark-color);
    margin-bottom: 15px;
    font-weight: 600;
}

.upload-zone p {
    color: var(--medium-gray);
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.upload-hint {
    font-size: 0.95rem !important;
    color: var(--primary-color) !important;
    font-weight: 500;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-15px); }
    60% { transform: translateY(-8px); }
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 12px;
    background: var(--light-gray);
    border-radius: 6px;
    overflow: hidden;
    margin: 20px 0;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 6px;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background-image: linear-gradient(
        -45deg,
        rgba(255, 255, 255, 0.2) 25%,
        transparent 25%,
        transparent 50%,
        rgba(255, 255, 255, 0.2) 50%,
        rgba(255, 255, 255, 0.2) 75%,
        transparent 75%,
        transparent
    );
    background-size: 50px 50px;
    animation: move 2s linear infinite;
}

@keyframes move {
    0% { background-position: 0 0; }
    100% { background-position: 50px 50px; }
}

/* Buttons */
.btn {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    padding: 14px 28px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: var(--shadow-medium);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin: 8px;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 25px rgba(102, 126, 234, 0.4);
}

.btn:hover::before {
    left: 100%;
}

.btn:active {
    transform: translateY(-1px);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn:disabled::before {
    display: none;
}

.btn-secondary {
    background: linear-gradient(135deg, var(--medium-gray), #718096);
    box-shadow: 0 4px 15px rgba(113, 128, 150, 0.3);
}

.btn-secondary:hover {
    box-shadow: 0 8px 25px rgba(113, 128, 150, 0.4);
}

/* Tabs */
.tabs {
    display: flex;
    border-bottom: 2px solid var(--light-gray);
    margin-bottom: 30px;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.tabs::-webkit-scrollbar {
    display: none;
}

.tab {
    padding: 18px 30px;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    font-weight: 600;
    transition: var(--transition);
    white-space: nowrap;
    color: var(--medium-gray);
    font-size: 1.1rem;
    position: relative;
}

.tab::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: var(--transition);
    transform: translateX(-50%);
}

.tab.active {
    color: var(--primary-color);
}

.tab.active::after {
    width: 100%;
}

.tab:hover {
    background: rgba(102, 126, 234, 0.05);
    color: var(--primary-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeInUp 0.4s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Preset Queries */
.preset-queries {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
    margin-bottom: 30px;
}

.preset-btn {
    background: white;
    border: 2px solid var(--light-gray);
    border-radius: var(--border-radius);
    padding: 25px;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
    box-shadow: var(--shadow-light);
    position: relative;
    overflow: hidden;
}

.preset-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.preset-btn:hover {
    border-color: var(--primary-color);
    background: linear-gradient(145deg, #f8f9ff, #ffffff);
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
}

.preset-btn:hover::before {
    transform: scaleX(1);
}

.preset-btn h4 {
    color: var(--dark-color);
    margin-bottom: 12px;
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.preset-btn p {
    color: var(--medium-gray);
    font-size: 1rem;
    line-height: 1.5;
}

/* SQL Editor */
.sql-editor {
    margin-bottom: 30px;
}

.sql-textarea {
    width: 100%;
    height: 250px;
    border: 2px solid var(--light-gray);
    border-radius: var(--border-radius);
    padding: 25px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', monospace;
    font-size: 14px;
    resize: vertical;
    background: var(--light-color);
    transition: var(--transition);
    line-height: 1.6;
    color: var(--dark-color);
}

.sql-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: white;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.sql-controls {
    margin-top: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.example-queries {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 15px;
}

.example-btn {
    background: var(--light-gray);
    border: none;
    padding: 10px 18px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
    color: var(--dark-color);
    font-weight: 500;
}

.example-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-light);
}

/* Results */
.results-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    flex-wrap: wrap;
    gap: 20px;
}

#resultCount {
    font-weight: 600;
    color: var(--dark-color);
    padding: 10px 20px;
    background: var(--light-color);
    border-radius: 25px;
    border: 2px solid var(--light-gray);
    font-size: 1rem;
}

.results-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-medium);
    margin-top: 25px;
}

.results-table th {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 18px 15px;
    text-align: left;
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: sticky;
    top: 0;
    z-index: 10;
}

.results-table td {
    padding: 15px;
    border-bottom: 1px solid var(--light-gray);
    font-size: 0.95rem;
    max-width: 300px;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.results-table tr:hover {
    background: rgba(102, 126, 234, 0.05);
}

.results-table tr:last-child td {
    border-bottom: none;
}

.no-results {
    text-align: center;
    padding: 50px;
    color: var(--medium-gray);
    font-size: 1.2rem;
}

.result-note {
    margin-top: 20px;
    padding: 15px;
    background: var(--light-color);
    border-radius: var(--border-radius);
    color: var(--medium-gray);
    font-style: italic;
    text-align: center;
}

/* Performance Stats */
#performanceStats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.perf-stat {
    background: linear-gradient(145deg, var(--light-color), #f1f5f9);
    padding: 30px;
    border-radius: var(--border-radius);
    text-align: center;
    border-left: 5px solid var(--primary-color);
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.perf-stat:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.perf-stat h4 {
    color: var(--dark-color);
    margin-bottom: 15px;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 600;
}

.perf-stat .value {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 5px;
    line-height: 1;
}

.perf-stat .unit {
    font-size: 0.85rem;
    color: var(--medium-gray);
    font-weight: 500;
}

/* Status Messages */
.status {
    padding: 18px 25px;
    border-radius: var(--border-radius);
    margin: 20px 0;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1rem;
    border-left: 5px solid;
}

.status.success {
    background: linear-gradient(135deg, #f0fff4, #c6f6d5);
    color: #22543d;
    border-left-color: var(--success-color);
}

.status.error {
    background: linear-gradient(135deg, #fed7d7, #feb2b2);
    color: #742a2a;
    border-left-color: var(--error-color);
}

.status.info {
    background: linear-gradient(135deg, #ebf8ff, #bee3f8);
    color: #2a4365;
    border-left-color: var(--info-color);
}

.status.warning {
    background: linear-gradient(135deg, #fffaf0, #fbd38d);
    color: #744210;
    border-left-color: var(--warning-color);
}

/* Loading States */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.loading-spinner {
    width: 80px;
    height: 80px;
    border: 8px solid rgba(255, 255, 255, 0.2);
    border-top: 8px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 25px;
}

.loading-text {
    color: white;
    font-size: 1.3rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Schema Info */
.schema-info ul {
    list-style: none;
    padding: 0;
}

.schema-info li {
    padding: 12px 0;
    border-bottom: 1px solid var(--light-gray);
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.schema-info li:last-child {
    border-bottom: none;
}

.schema-info strong {
    color: var(--primary-color);
    font-weight: 600;
    min-width: 200px;
}

.schema-info h4 {
    color: var(--dark-color);
    margin-bottom: 20px;
    font-size: 1.2rem;
    font-weight: 600;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .card {
        padding: 25px;
    }
    
    .header {
        padding: 30px 0;
    }
    
    .preset-queries {
        grid-template-columns: 1fr;
    }
    
    .sql-controls {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .results-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .tabs {
        font-size: 0.95rem;
    }
    
    .tab {
        padding: 15px 20px;
    }
    
    .upload-zone {
        padding: 40px 25px;
    }
    
    .results-table {
        font-size: 0.85rem;
    }
    
    .results-table th,
    .results-table td {
        padding: 10px 8px;
    }
    
    #performanceStats {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    .perf-stat {
        padding: 20px;
    }
    
    .perf-stat .value {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .card {
        padding: 20px;
    }
    
    .upload-zone {
        padding: 30px 20px;
    }
    
    .upload-icon {
        font-size: 3.5rem;
    }
    
    .upload-zone h3 {
        font-size: 1.2rem;
    }
    
    .preset-btn {
        padding: 20px;
    }
    
    .sql-textarea {
        height: 200px;
        padding: 20px;
    }
    
    .tabs {
        border-bottom-width: 1px;
    }
    
    .tab {
        padding: 12px 15px;
        font-size: 0.9rem;
    }
}

/* Dark mode support (optional) */
@media (prefers-color-scheme: dark) {
    :root {
        --text-color: #e2e8f0;
        --dark-color: #f7fafc;
        --light-color: #2d3748;
        --light-gray: #4a5568;
        --medium-gray: #718096;
        --border-color: #4a5568;
    }
    
    body {
        background: linear-gradient(135deg, #1a202c 0%, #2d3748 100%);
    }
    
    .card {
        background: rgba(45, 55, 72, 0.95);
        color: var(--text-color);
    }
    
    .upload-zone {
        background: linear-gradient(145deg, #2d3748, #4a5568);
        border-color: var(--primary-color);
    }
    
    .results-table {
        background: var(--light-color);
        color: var(--text-color);
    }
    
    .sql-textarea {
        background: var(--light-color);
        color: var(--text-color);
        border-color: var(--border-color);
    }
}

/* Print styles */
@media print {
    body {
        background: white;
    }
    
    .card {
        background: white;
        box-shadow: none;
        border: 1px solid #ddd;
    }
    
    .btn,
    .loading-overlay,
    .upload-zone {
        display: none;
    }
    
    .results-table {
        box-shadow: none;
    }
}