/**
 * NOVA™ Agent - Manus Style Theme
 * Clean white theme with professional aesthetics
 * 
 * @version 2.0
 * @date January 2026
 */

/* ============================================================================
   CSS VARIABLES
   ============================================================================ */

:root {
    /* Backgrounds */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F9FAFB;
    --bg-tertiary: #F3F4F6;
    --bg-elevated: #FFFFFF;
    --bg-hover: #F3F4F6;
    --bg-active: #EEF2FF;
    
    /* Accent Colors */
    --accent-primary: #3B82F6;
    --accent-secondary: #6366F1;
    --accent-success: #10B981;
    --accent-warning: #F59E0B;
    --accent-error: #EF4444;
    --accent-info: #06B6D4;
    
    /* Card Colors */
    --card-blue: #EFF6FF;
    --card-purple: #F5F3FF;
    --card-green: #ECFDF5;
    --card-orange: #FFF7ED;
    --card-teal: #F0FDFA;
    --card-red: #FEF2F2;
    
    /* Text Colors */
    --text-primary: #111827;
    --text-secondary: #4B5563;
    --text-tertiary: #6B7280;
    --text-muted: #9CA3AF;
    
    /* Border Colors */
    --border-light: #F3F4F6;
    --border-default: #E5E7EB;
    --border-strong: #D1D5DB;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 200ms ease;
    --transition-slow: 300ms ease;
    
    /* Spacing */
    --header-height: 64px;
}

/* ============================================================================
   RESET & BASE
   ============================================================================ */

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* ============================================================================
   APP CONTAINER
   ============================================================================ */

.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

.app-header {
    height: var(--header-height);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-default);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left,
.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-center {
    flex: 1;
    display: flex;
    justify-content: center;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-mark {
    font-size: 24px;
    color: var(--accent-primary);
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.logo-badge {
    font-size: 10px;
    font-weight: 600;
    padding: 3px 8px;
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
    border-radius: 4px;
    letter-spacing: 0.5px;
}

/* Navigation */
.main-nav {
    display: flex;
    gap: 8px;
}

.nav-item {
    padding: 8px 16px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    font-family: var(--font-sans);
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.nav-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--bg-active);
    color: var(--accent-primary);
}

/* Framework Badge */
.framework-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: var(--bg-tertiary);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}

.framework-badge .flag {
    font-size: 14px;
}

/* Header Button */
.header-btn {
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    color: var(--text-tertiary);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.header-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* User Avatar */
.user-avatar {
    width: 36px;
    height: 36px;
    background: var(--accent-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
}

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

.main-content {
    flex: 1;
    overflow-y: auto;
}

.view {
    display: none;
}

.view.active {
    display: block;
}

/* ============================================================================
   HOME VIEW
   ============================================================================ */

#homeView {
    max-width: 1000px;
    margin: 0 auto;
    padding: 48px 24px 80px;
}

/* Hero Section */
.hero-section {
    text-align: center;
    margin-bottom: 40px;
}

.hero-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.hero-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================================================
   PROMPT INPUT
   ============================================================================ */

.prompt-container {
    margin-bottom: 48px;
}

.prompt-box {
    background: var(--bg-primary);
    border: 1px solid var(--border-default);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.prompt-box:focus-within {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-lg), 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.prompt-input-wrapper {
    display: flex;
    align-items: flex-end;
    padding: 16px;
    gap: 12px;
}

.prompt-input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 16px;
    font-family: var(--font-sans);
    color: var(--text-primary);
    resize: none;
    min-height: 24px;
    max-height: 200px;
    line-height: 1.5;
}

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

.prompt-input:focus {
    outline: none;
}

.prompt-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.prompt-attach {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.prompt-attach:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.prompt-submit {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    background: var(--accent-primary);
    color: white;
    font-size: 14px;
    font-weight: 600;
    font-family: var(--font-sans);
    border-radius: 10px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.prompt-submit:hover {
    background: #2563EB;
    transform: translateY(-1px);
}

.prompt-submit:active {
    transform: translateY(0);
}

.prompt-hints {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 12px;
}

.hint {
    font-size: 13px;
    color: var(--text-muted);
}

.hint-divider {
    color: var(--border-default);
}

/* ============================================================================
   TASK CARDS
   ============================================================================ */

.task-cards-section {
    margin-bottom: 48px;
}

.section-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
}

.task-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
}

.task-card {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    background: var(--bg-primary);
    border: 1px solid var(--border-default);
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
}

.task-card:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.card-icon.blue {
    background: var(--card-blue);
    color: #3B82F6;
}

.card-icon.purple {
    background: var(--card-purple);
    color: #7C3AED;
}

.card-icon.green {
    background: var(--card-green);
    color: #10B981;
}

.card-icon.orange {
    background: var(--card-orange);
    color: #F59E0B;
}

.card-icon.teal {
    background: var(--card-teal);
    color: #14B8A6;
}

.card-icon.red {
    background: var(--card-red);
    color: #EF4444;
}

.card-content {
    flex: 1;
    min-width: 0;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.card-description {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.card-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    font-size: 11px;
    font-weight: 600;
    padding: 4px 8px;
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
    border-radius: 6px;
}

/* ============================================================================
   FRAMEWORK SELECTOR
   ============================================================================ */

.framework-section {
    margin-bottom: 48px;
}

.framework-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.framework-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 20px 16px;
    background: var(--bg-primary);
    border: 2px solid var(--border-default);
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-sans);
}

.framework-btn:hover {
    border-color: var(--border-strong);
    background: var(--bg-hover);
}

.framework-btn.active {
    border-color: var(--accent-primary);
    background: var(--bg-active);
}

.fw-flag {
    font-size: 24px;
}

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

.fw-sub {
    font-size: 12px;
    color: var(--text-tertiary);
}

/* ============================================================================
   WORKFLOW VIEW
   ============================================================================ */

#workflowView {
    height: calc(100vh - var(--header-height));
}

.workflow-layout {
    display: grid;
    grid-template-columns: 1fr 360px;
    height: 100%;
}

.workflow-main {
    display: flex;
    flex-direction: column;
    padding: 24px;
    overflow-y: auto;
    background: var(--bg-primary);
}

.workflow-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.back-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    border: 1px solid var(--border-default);
    background: var(--bg-primary);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    font-family: var(--font-sans);
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.back-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.workflow-title h2 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.workflow-status {
    font-size: 13px;
    font-weight: 500;
    color: var(--accent-primary);
}

/* Agent Activity */
.agent-activity {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}

.activity-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    background: var(--bg-secondary);
    border-radius: 12px;
    animation: fadeIn 0.3s ease;
}

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

.activity-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    color: var(--text-tertiary);
    position: relative;
}

.activity-icon.thinking {
    color: var(--accent-primary);
}

.pulse-ring {
    position: absolute;
    inset: -4px;
    border: 2px solid var(--accent-primary);
    border-radius: 12px;
    animation: pulse-ring 1.5s ease infinite;
}

@keyframes pulse-ring {
    0%, 100% { opacity: 0; transform: scale(0.8); }
    50% { opacity: 0.5; transform: scale(1); }
}

.activity-icon.complete {
    background: var(--card-green);
    color: var(--accent-success);
}

.activity-icon.error {
    background: var(--card-red);
    color: var(--accent-error);
}

.activity-content {
    flex: 1;
    min-width: 0;
}

.activity-agent {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

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

.activity-time {
    font-size: 12px;
    color: var(--text-muted);
    white-space: nowrap;
}

/* Output Preview */
.output-preview {
    background: var(--bg-secondary);
    border-radius: 12px;
    overflow: hidden;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-light);
}

.preview-header h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.preview-actions {
    display: flex;
    gap: 8px;
}

.preview-btn {
    padding: 6px 12px;
    border: 1px solid var(--border-default);
    background: var(--bg-primary);
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    font-family: var(--font-sans);
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.preview-btn:hover {
    background: var(--bg-hover);
}

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

.preview-btn.primary:hover {
    background: #2563EB;
}

.preview-content {
    padding: 20px;
    max-height: 400px;
    overflow-y: auto;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ============================================================================
   WORKFLOW SIDEBAR
   ============================================================================ */

.workflow-sidebar {
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-default);
    padding: 24px;
    overflow-y: auto;
}

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

.sidebar-section:last-child {
    margin-bottom: 0;
}

.sidebar-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
}

/* Progress Ring */
.progress-ring-container {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.progress-ring {
    transform: rotate(-90deg);
}

.progress-ring-fill {
    transition: stroke-dashoffset 0.5s ease;
}

.progress-text {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.progress-percent {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

.progress-label {
    font-size: 12px;
    color: var(--text-tertiary);
}

/* Plan Steps */
.plan-steps {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.step-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-primary);
    border-radius: 8px;
}

.step-number {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
    font-size: 12px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-item.active .step-number {
    background: var(--accent-primary);
    color: white;
}

.step-item.complete .step-number {
    background: var(--accent-success);
    color: white;
}

.step-text {
    flex: 1;
    font-size: 13px;
    color: var(--text-secondary);
}

.step-item.active .step-text {
    color: var(--text-primary);
    font-weight: 500;
}

/* Validation Checks */
.validation-checks {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.check-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: var(--bg-primary);
    border-radius: 8px;
    font-size: 13px;
}

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

.check-item.pass .check-icon {
    color: var(--accent-success);
}

.check-item.fail .check-icon {
    color: var(--accent-error);
}

.check-label {
    color: var(--text-secondary);
}

/* Doctrine References */
.doctrine-refs {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ref-item {
    padding: 10px 12px;
    background: var(--bg-primary);
    border-radius: 8px;
}

.ref-code {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: 2px;
}

.ref-text {
    font-size: 13px;
    color: var(--text-secondary);
}

/* ============================================================================
   DROP OVERLAY
   ============================================================================ */

.drop-overlay {
    position: fixed;
    inset: 0;
    background: rgba(59, 130, 246, 0.1);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.drop-overlay.active {
    display: flex;
}

.drop-content {
    padding: 48px;
    background: var(--bg-primary);
    border: 2px dashed var(--accent-primary);
    border-radius: 16px;
    text-align: center;
    color: var(--accent-primary);
}

.drop-content svg {
    margin-bottom: 16px;
}

.drop-content p {
    font-size: 18px;
    font-weight: 600;
}

/* ============================================================================
   RESPONSIVE
   ============================================================================ */

@media (max-width: 1024px) {
    .framework-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .workflow-layout {
        grid-template-columns: 1fr;
    }
    
    .workflow-sidebar {
        display: none;
    }
}

@media (max-width: 768px) {
    .app-header {
        padding: 0 16px;
    }
    
    .header-center {
        display: none;
    }
    
    #homeView {
        padding: 24px 16px 60px;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .task-cards-grid {
        grid-template-columns: 1fr;
    }
    
    .framework-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}