/* ============================================
   Perfex AI Uploader - Styles
   ============================================ */

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --bg-color: #f8fafc;
    --panel-bg: #ffffff;
    --text-color: #1e293b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color), #3b82f6);
    color: white;
    padding: 2rem 0;
    box-shadow: var(--shadow);
}

.header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.header p {
    opacity: 0.9;
    font-size: 1.1rem;
}

/* Main Content */
.main-content {
    padding: 2rem 0;
    min-height: calc(100vh - 200px);
}

/* Panels */
.panel {
    background: var(--panel-bg);
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    overflow: hidden;
}

.panel-header {
    background: #f1f5f9;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.panel-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.panel-body {
    padding: 1.5rem;
}

/* Settings Panel */
.settings-panel.collapsed .panel-body {
    display: none;
}

.toggle-icon {
    transition: transform 0.3s;
}

.settings-panel.collapsed .toggle-icon {
    transform: rotate(-90deg);
}

/* Notices */
.notice {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    border-left: 4px solid;
}

.notice.warning {
    background: #fef3c7;
    border-color: var(--warning-color);
    color: #92400e;
}

.notice.success {
    background: #d1fae5;
    border-color: var(--success-color);
    color: #065f46;
}

.notice a {
    color: inherit;
    font-weight: 600;
    text-decoration: underline;
}

/* Form Elements */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group small {
    display: block;
    margin-top: 0.5rem;
    color: var(--secondary-color);
    font-size: 0.875rem;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

/* AI Input Section */
.ai-input-section textarea {
    width: 100%;
    min-height: 150px;
    padding: 1rem;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    resize: vertical;
    margin-bottom: 1rem;
}

.ai-input-section textarea:focus {
    border-color: var(--primary-color);
    border-style: solid;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-block;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

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

.btn-secondary:hover {
    background: #475569;
}

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

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

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.button-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Card List */
.card-list {
    display: grid;
    gap: 1.5rem;
}

/* Milestone Card */
.milestone-card {
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    background: #fafafa;
    transition: all 0.3s;
}

.milestone-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.milestone-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.milestone-number {
    background: var(--primary-color);
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

/* Task Card */
.task-card {
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    background: white;
}

.task-card-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.task-card-body {
    display: grid;
    gap: 1rem;
}

.field-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* Checklist Editor */
.checklist-editor {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1rem;
    background: #f9fafb;
}

.checklist-item {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    align-items: center;
}

.checklist-item input {
    flex: 1;
}

.remove-checklist-item {
    background: var(--danger-color);
    color: white;
    border: none;
    border-radius: 4px;
    width: 28px;
    height: 28px;
    cursor: pointer;
    font-size: 1.25rem;
    line-height: 1;
}

.add-checklist-item {
    margin-top: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.875rem;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    padding: 2rem 0;
}

/* Progress Bar */
.progress-container {
    padding: 2rem;
    text-align: center;
}

.progress-bar {
    width: 100%;
    height: 30px;
    background: #e2e8f0;
    border-radius: 15px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--success-color));
    transition: width 0.3s ease;
    border-radius: 15px;
}

.progress-text {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--text-color);
}

/* Loading Indicator */
.loading-indicator {
    text-align: center;
    padding: 2rem;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #e2e8f0;
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 12px;
    max-width: 90%;
    max-height: 90vh;
    overflow: auto;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-body {
    padding: 1.5rem;
    max-height: 60vh;
    overflow: auto;
}

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.close-btn {
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--secondary-color);
    line-height: 1;
    padding: 0;
    width: 32px;
    height: 32px;
}

.modal-body pre {
    background: #1e293b;
    color: #e2e8f0;
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    font-size: 0.875rem;
    line-height: 1.5;
}

/* Success Panel */
.success-panel {
    border: 2px solid var(--success-color);
}

.success-panel .panel-header {
    background: #d1fae5;
    color: #065f46;
}

/* Footer */
.footer {
    background: #1e293b;
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 4rem;
}

/* Responsive */
@media (max-width: 768px) {
    .header h1 {
        font-size: 1.5rem;
    }

    .button-group {
        flex-direction: column;
    }

    .btn-large {
        width: 100%;
    }

    .action-buttons {
        flex-direction: column;
    }

    .action-buttons .btn {
        width: 100%;
    }

    .field-row {
        grid-template-columns: 1fr;
    }

    .modal-content {
        max-width: 95%;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-muted { color: var(--secondary-color); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.hidden { display: none !important; }