:root {
    --bg-start: #232f3e;
    --bg-end: #37475a;
    --card-bg: #ffffff;
    --card-text: #232f3e;
    --border: #ddd;
    --input-bg: #ffffff;
    --orange: #ff9900;
    --orange-light: #ffb84d;
    --orange-dark: #e88b00;
    --text-muted: #666;
}

body.dark-mode {
    --bg-start: #0a0e14;
    --bg-end: #1a1f2e;
    --card-bg: #1e2936;
    --card-text: #e0e0e0;
    --border: #2d3748;
    --input-bg: #2d3748;
    --text-muted: #a0aec0;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

body {
    font-family: 'Amazon Ember', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background: linear-gradient(135deg, var(--bg-start) 0%, var(--bg-end) 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
}

.logo-container {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 10;
}

.logo {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    box-shadow: 0 8px 20px rgba(255, 153, 0, 0.3);
}

.dark-mode-toggle {
    position: absolute;
    top: 20px;
    right: 0;
    z-index: 100;
    background: var(--orange);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
    box-shadow: 0 4px 10px rgba(255, 153, 0, 0.3);
    display: flex;
    align-items: center;
    gap: 8px;
    width: auto;
    margin-bottom: 0;
}

.dark-mode-toggle:hover {
    background: var(--orange-dark);
    transform: translateY(-2px);
}

.header {
    text-align: center;
    color: white;
    margin-bottom: 40px;
    padding-top: 20px;
}

.header h1 {
    font-size: 42px;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    background: linear-gradient(135deg, var(--orange) 0%, var(--orange-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header p {
    font-size: 18px;
    color: var(--orange-light);
}

.steps-container {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.steps-container.expanded {
    grid-template-columns: 0.6fr 0.6fr 2.2fr;
}

.step-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    border-top: 4px solid var(--orange);
}

.steps-container.expanded .step-card:nth-child(1),
.steps-container.expanded .step-card:nth-child(2) {
    opacity: 0.5;
    transform: scale(0.95);
}

.step-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(255, 153, 0, 0.3);
}

.steps-container.expanded .step-card:hover {
    transform: scale(0.95);
}

.step-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--orange-light);
}

.step-number {
    background: linear-gradient(135deg, var(--orange) 0%, var(--orange-light) 100%);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 18px;
    box-shadow: 0 4px 10px rgba(255, 153, 0, 0.3);
    flex-shrink: 0;
}

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

.btn-reset {
    background: #6c757d;
    color: white;
    width: auto;
    padding: 8px 16px;
    font-size: 13px;
    margin-bottom: 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    display: none;
}

.btn-reset.show {
    display: block;
}

.btn-reset:hover {
    background: #5a6268;
    transform: translateY(-1px);
}

.site-preview {
    background: linear-gradient(135deg, #fff5e6 0%, #ffe6cc 100%);
    border: 2px solid var(--orange);
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 20px;
    display: none;
    align-items: center;
    gap: 10px;
}

.site-preview.show {
    display: flex;
}

.preview-label {
    color: var(--orange);
    font-weight: 600;
    font-size: 14px;
}

.preview-value {
    color: #232f3e;
    font-weight: 700;
    font-size: 16px;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: var(--card-text);
    font-weight: 600;
    font-size: 14px;
}

input[type="text"],
input[type="date"],
select {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    background: var(--input-bg);
    color: var(--card-text);
}

input:focus, select:focus {
    outline: none;
    border-color: var(--orange);
    box-shadow: 0 0 0 3px rgba(255, 153, 0, 0.1);
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    padding: 15px;
    border: 2px solid var(--orange);
    border-radius: 8px;
    background: rgba(255, 153, 0, 0.05);
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.checkbox-item label {
    margin: 0;
    cursor: pointer;
    font-weight: 400;
}

input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--orange);
}

.select-all-controls {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
}

.btn-small {
    padding: 6px 12px;
    font-size: 12px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
}

.btn-select-all {
    background: var(--orange);
    color: white;
}

.btn-deselect-all {
    background: #6c757d;
    color: white;
}

.date-range {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.keyword-container {
    display: flex;
    gap: 10px;
}

.keyword-container input {
    flex: 1;
}

.keyword-container select {
    width: 120px;
}

.output-box {
    background: var(--input-bg);
    border: 2px solid var(--border);
    border-radius: 6px;
    padding: 15px;
    font-family: 'Courier New', monospace;
    font-size: 12px;
    word-break: break-all;
    max-height: 200px;
    overflow-y: auto;
    margin-bottom: 15px;
    color: var(--card-text);
}

.file-upload-area {
    border: 3px dashed var(--orange);
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    margin-bottom: 15px;
    background: rgba(255, 153, 0, 0.05);
}

.file-upload-area:hover {
    border-color: var(--orange-dark);
    transform: scale(1.01);
}

.file-upload-area.dragover {
    border-color: var(--orange-dark);
    transform: scale(1.02);
    background: rgba(255, 153, 0, 0.1);
}

.upload-icon {
    font-size: 48px;
    margin-bottom: 10px;
}

.upload-text {
    color: var(--card-text);
}

.file-info {
    background: rgba(255, 153, 0, 0.1);
    border: 2px solid var(--orange);
    padding: 10px;
    border-radius: 6px;
    margin-bottom: 15px;
    display: none;
    color: var(--card-text);
}

.file-info.show {
    display: block;
}

.status-message {
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 15px;
    display: none;
    text-align: center;
    font-weight: 600;
}

.status-message.show {
    display: block;
    animation: fadeIn 0.3s;
}

.status-message.processing {
    background: #fff3cd;
    color: #856404;
    border: 2px solid #ffc107;
}

.status-message.success {
    background: #d4edda;
    color: #155724;
    border: 2px solid #28a745;
}

.status-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 2px solid #dc3545;
}

button {
    width: 100%;
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    margin-bottom: 10px;
    transition: all 0.3s;
}

.btn-primary {
    background: linear-gradient(135deg, var(--orange) 0%, var(--orange-light) 100%);
    color: white;
    box-shadow: 0 4px 10px rgba(255, 153, 0, 0.3);
}

.btn-primary:hover:not(:disabled) {
    background: var(--orange-dark);
    transform: translateY(-2px);
}

.btn-secondary {
    background: linear-gradient(135deg, #232f3e 0%, #37475a 100%);
    color: white;
}

.btn-secondary:hover:not(:disabled) {
    background: #37475a;
    transform: translateY(-2px);
}

.btn-success {
    background: var(--orange);
    color: white;
}

.btn-success:hover:not(:disabled) {
    background: var(--orange-dark);
    transform: translateY(-2px);
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.success-message {
    background: #d4edda;
    color: #155724;
    padding: 10px;
    border-radius: 6px;
    margin-top: 10px;
    display: none;
    text-align: center;
    font-weight: 600;
    border: 2px solid #28a745;
}

.success-message.show {
    display: block;
    animation: fadeIn 0.3s;
}

.insights-container {
    background: var(--input-bg);
    border-radius: 8px;
    padding: 20px;
    border: 2px solid var(--orange);
}

.insights-container h3 {
    color: var(--orange);
    margin-bottom: 15px;
}

.insight-item {
    background: var(--card-bg);
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 10px;
    border-left: 4px solid var(--orange);
}

.insight-title {
    font-weight: 600;
    color: var(--card-text);
    margin-bottom: 5px;
}

.insight-text {
    color: var(--text-muted);
    font-size: 14px;
}

.loading {
    text-align: center;
    padding: 30px;
    display: none;
}

.loading.show {
    display: block;
}

.spinner {
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--orange);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto 10px;
}

.error-display {
    background: #f8d7da;
    border: 2px solid #dc3545;
    color: #721c24;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    display: none;
    margin-top: 20px;
}

.error-display.show {
    display: block;
}

.dashboard-content {
    min-height: 300px;
    padding: 20px;
    background: var(--input-bg);
    border-radius: 8px;
    color: var(--card-text);
}

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

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

@media (max-width: 768px) {
    .steps-container,
    .steps-container.expanded {
        grid-template-columns: 1fr;
    }
    
    .logo {
        width: 60px;
        height: 60px;
    }
    
    .header h1 {
        font-size: 32px;
    }

    .dark-mode-toggle {
        padding: 8px 12px;
        font-size: 12px;
    }
}