/* Shippo Shipping Cost Optimizer Styles */

:root {
    /* Shippo brand colors */
    --shippo-blue: #2d6bc4;
    --shippo-blue-dark: #1a4a8a;
    --shippo-blue-light: #4a8be0;
    --shippo-ink: #1e1919;
    --shippo-canvas: #f5f7fa;

    /* Semantic colors */
    --color-success: #10b981;
    --color-success-dark: #059669;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #3b82f6;

    /* Risk colors */
    --risk-high: #ef4444;
    --risk-medium: #f59e0b;
    --risk-low: #22c55e;

    /* Savings green */
    --savings-green: #10b981;

    /* Neutrals */
    --color-white: #ffffff;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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);
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    line-height: 1.5;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--shippo-canvas);
    color: var(--shippo-ink);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navigation */
.navbar {
    background: var(--color-white);
    border-bottom: 1px solid var(--color-gray-200);
    padding: var(--spacing-md) var(--spacing-xl);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--shippo-blue);
    font-weight: 700;
    font-size: 1.25rem;
}

.brand-icon {
    width: 32px;
    height: 32px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    text-decoration: none;
    color: var(--color-gray-600);
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--shippo-blue);
}

.nav-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding-left: var(--spacing-lg);
    border-left: 1px solid var(--color-gray-200);
}

.user-name {
    color: var(--color-gray-700);
    font-weight: 500;
}

/* Main Content */
.main-content {
    flex: 1;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--spacing-xl);
}

/* Hero Section */
.hero {
    background: var(--shippo-blue);
    color: var(--color-white);
    padding: var(--spacing-2xl) var(--spacing-xl);
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.875rem;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background: var(--shippo-blue-dark);
}

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

.hero .btn-primary:hover {
    background: var(--color-gray-100);
}

.btn-secondary {
    background: var(--color-gray-100);
    color: var(--color-gray-700);
}

.btn-secondary:hover {
    background: var(--color-gray-200);
}

.btn-outline {
    background: transparent;
    color: var(--color-gray-600);
    border: 1px solid var(--color-gray-300);
}

.btn-outline:hover {
    background: var(--color-gray-100);
}

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
}

.btn-icon {
    width: 18px;
    height: 18px;
}

/* Cards */
.card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.card-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-xl);
}

.page-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--shippo-ink);
}

.subtitle {
    color: var(--color-gray-500);
    margin-top: var(--spacing-xs);
}

.header-meta {
    display: flex;
    gap: var(--spacing-lg);
}

.team-info {
    display: flex;
    flex-direction: column;
    text-align: right;
}

.team-info .label {
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

.team-info .value {
    font-weight: 600;
    color: var(--color-gray-700);
}

/* Features Section */
.features {
    padding: var(--spacing-2xl) var(--spacing-xl);
    background: var(--color-white);
}

.section-title {
    text-align: center;
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--shippo-ink);
}

.section-subtitle {
    text-align: center;
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-xl);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.feature-grid.three-col {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.feature-card {
    padding: var(--spacing-lg);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all 0.2s;
}

.feature-card:hover {
    border-color: var(--shippo-blue);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-md);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
}

.connect-icon { background: #dbeafe; color: #2563eb; }
.analyze-icon { background: #fef3c7; color: #d97706; }
.savings-icon { background: #d1fae5; color: #059669; }

.feature-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--shippo-ink);
}

.feature-card p {
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

/* Vectors Section */
.vectors-section {
    padding: var(--spacing-2xl) var(--spacing-xl);
    background: var(--shippo-canvas);
}

.vector-card {
    text-align: left;
}

.vector-header {
    margin-bottom: var(--spacing-sm);
}

/* Alert */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.alert-error {
    background: #fef2f2;
    color: #dc2626;
    border: 1px solid #fecaca;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.stat-card {
    padding: var(--spacing-lg);
    background: var(--shippo-canvas);
    border-radius: var(--radius-md);
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--shippo-ink);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--color-gray-500);
    margin-top: var(--spacing-xs);
}

.stat-success .stat-value { color: var(--color-success); }
.stat-warning .stat-value { color: var(--color-warning); }
.stat-danger .stat-value { color: var(--color-danger); }
.stat-info .stat-value { color: var(--color-info); }

/* Savings Highlight */
.savings-highlight {
    background: var(--shippo-blue);
    color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.savings-content {
    display: flex;
    flex-direction: column;
}

.savings-label {
    font-size: 0.875rem;
    opacity: 0.9;
}

.savings-amount {
    font-size: 2rem;
    font-weight: 700;
}

.savings-annual {
    text-align: right;
}

.annual-label {
    font-size: 0.75rem;
    opacity: 0.8;
    display: block;
}

.annual-amount {
    font-size: 1.25rem;
    font-weight: 600;
}

.savings-green {
    color: var(--savings-green);
}

/* Summary Cards */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.summary-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.summary-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-100);
    color: var(--color-gray-600);
    flex-shrink: 0;
}

.summary-icon svg {
    width: 24px;
    height: 24px;
}

.summary-card.success .summary-icon { background: #d1fae5; color: #059669; }
.summary-card.warning .summary-icon { background: #fef3c7; color: #d97706; }
.summary-card.danger .summary-icon { background: #fee2e2; color: #dc2626; }
.summary-card.info .summary-icon { background: #dbeafe; color: #2563eb; }

.summary-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--shippo-ink);
}

.summary-label {
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

/* Savings Breakdown Section */
.savings-breakdown-section {
    margin-bottom: var(--spacing-xl);
}

.savings-breakdown-section h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--shippo-ink);
}

.breakdown-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.breakdown-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border: 1px solid var(--color-gray-200);
}

.breakdown-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.breakdown-count {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--shippo-blue);
}

.breakdown-type {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-xs);
}

.breakdown-savings {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--savings-green);
    margin-bottom: var(--spacing-xs);
}

.breakdown-desc {
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

/* Carrier Summary */
.carrier-summary h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.carrier-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.carrier-card {
    padding: var(--spacing-md);
    background: var(--shippo-canvas);
    border-radius: var(--radius-md);
    text-align: center;
}

.carrier-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--shippo-ink);
    margin-bottom: var(--spacing-sm);
}

.carrier-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
}

.carrier-stat {
    display: flex;
    flex-direction: column;
}

.carrier-stat-value {
    font-size: 1.125rem;
    font-weight: 600;
}

.carrier-stat-label {
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

/* Finding Sections (Collapsible) */
.finding-section {
    padding: 0;
    overflow: hidden;
}

.finding-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    cursor: pointer;
    user-select: none;
    transition: background-color 0.2s;
}

.finding-section-header:hover {
    background: var(--shippo-canvas);
}

.finding-section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.finding-section-title h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--shippo-ink);
}

.finding-count {
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

.finding-savings {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--savings-green);
}

.collapse-icon {
    width: 20px;
    height: 20px;
    color: var(--color-gray-400);
    transition: transform 0.2s;
    flex-shrink: 0;
}

.finding-section-body {
    max-height: 2000px;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.finding-section-body.collapsed {
    max-height: 0;
}

/* Data Table */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-gray-200);
}

.data-table th {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--shippo-canvas);
}

.data-table td {
    font-size: 0.875rem;
}

/* Tracking number monospace */
.tracking-number {
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
    font-size: 0.75rem;
    background: var(--color-gray-100);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    color: var(--color-gray-700);
}

/* Carrier badge */
.carrier-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--shippo-blue);
    color: var(--color-white);
    padding: 1px 8px;
    border-radius: var(--radius-sm);
    margin-right: var(--spacing-xs);
}

.service-name {
    font-size: 0.8rem;
    color: var(--color-gray-600);
}

/* Route display */
.route-cell {
    white-space: nowrap;
}

.route-origin, .route-dest {
    font-size: 0.8rem;
}

.route-arrow {
    color: var(--color-gray-400);
    margin: 0 4px;
}

/* Rates display */
.rates-cell {
    white-space: nowrap;
}

.rate-actual {
    font-weight: 500;
    color: var(--color-gray-700);
}

.rate-optimal {
    font-size: 0.8rem;
    color: var(--savings-green);
    margin-left: 4px;
}

.savings-cell {
    font-weight: 600;
    color: var(--savings-green);
}

.annual-cell {
    font-weight: 600;
    color: var(--shippo-blue);
}

/* Detail row */
.detail-row td {
    padding-top: 0;
    border-bottom: 2px solid var(--color-gray-200);
}

.finding-detail {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-gray-50);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-xs);
}

.detail-text {
    display: block;
    font-size: 0.8rem;
    color: var(--color-gray-600);
}

.detail-rec {
    display: block;
    font-size: 0.8rem;
    color: var(--shippo-blue);
    font-weight: 500;
    margin-top: 2px;
}

.actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
}

.badge-risk {
    font-weight: 700;
    font-size: 0.65rem;
    letter-spacing: 0.05em;
}

.badge-risk-high { background: #fee2e2; color: #dc2626; }
.badge-risk-medium { background: #fef3c7; color: #d97706; }
.badge-risk-low { background: #d1fae5; color: #059669; }

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
}

.empty-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    color: var(--shippo-blue);
}

.empty-icon svg {
    width: 100%;
    height: 100%;
}

.empty-state h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--shippo-ink);
    margin-bottom: var(--spacing-sm);
}

.empty-state p {
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-lg);
}

/* Analysis Form */
.analysis-card h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.analysis-card p {
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-lg);
}

.analysis-form .form-row {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-end;
}

.analysis-form .form-group {
    flex: 1;
}

/* Form Elements */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-700);
}

.form-control {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--shippo-blue);
    box-shadow: 0 0 0 3px rgba(45, 107, 196, 0.1);
}

/* Timestamp */
.timestamp {
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

/* Footer */
.footer {
    background: var(--color-white);
    border-top: 1px solid var(--color-gray-200);
    padding: var(--spacing-lg) var(--spacing-xl);
    margin-top: auto;
}

.footer-container {
    max-width: 1280px;
    margin: 0 auto;
    text-align: center;
}

.footer p {
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .nav-links {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .hero-actions {
        flex-direction: column;
    }

    .page-header {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .header-meta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .team-info {
        text-align: left;
    }

    .savings-highlight {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }

    .analysis-form .form-row {
        flex-direction: column;
    }

    .data-table {
        display: block;
        overflow-x: auto;
    }

    .finding-section-title {
        flex-wrap: wrap;
    }

    .summary-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}