/* Stripe-inspired Design System */

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

:root {
    /* Stripe Colors */
    --stripe-purple: #635BFF;
    --stripe-purple-dark: #0A2540;
    --stripe-blue: #00D4FF;
    --stripe-green: #00D924;

    /* Grays */
    --gray-50: #F7FAFC;
    --gray-100: #EDF2F7;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E0;
    --gray-400: #A0AEC0;
    --gray-500: #718096;
    --gray-600: #4A5568;
    --gray-700: #2D3748;
    --gray-800: #1A202C;
    --gray-900: #171923;

    /* Semantic Colors */
    --success: #00D924;
    --warning: #FFC043;
    --error: #FF5252;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

    /* Border Radius */
    --radius-sm: 6px;
    --radius: 8px;
    --radius-lg: 12px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gray-50);
    color: var(--gray-900);
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Layout */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 240px;
    background: white;
    border-right: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.sidebar-header {
    padding: 20px 16px;
    border-bottom: 1px solid var(--gray-200);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-900);
}

.sidebar-nav {
    flex: 1;
    padding: 16px 8px;
    overflow-y: auto;
}

.sidebar-footer {
    padding: 16px 8px;
    border-top: 1px solid var(--gray-200);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    color: var(--gray-600);
    text-decoration: none;
    border-radius: var(--radius-sm);
    margin-bottom: 2px;
    transition: all 0.15s ease;
    font-weight: 500;
}

.nav-item:hover {
    background: var(--gray-50);
    color: var(--gray-900);
}

.nav-item.active {
    background: var(--gray-100);
    color: var(--stripe-purple);
}

.nav-item svg {
    flex-shrink: 0;
}

/* Main Content */
.main-content {
    margin-left: 240px;
    min-height: 100vh;
}

/* Top Bar */
.topbar {
    background: white;
    border-bottom: 1px solid var(--gray-200);
    padding: 16px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 90;
}

.topbar h1 {
    font-size: 24px;
    font-weight: 600;
    color: var(--gray-900);
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    width: 300px;
    transition: all 0.15s ease;
}

.search-box:focus-within {
    background: white;
    border-color: var(--stripe-purple);
    box-shadow: 0 0 0 3px rgba(99, 91, 255, 0.1);
}

.search-box input {
    border: none;
    background: transparent;
    outline: none;
    flex: 1;
    color: var(--gray-900);
    font-size: 14px;
}

.search-box input::placeholder {
    color: var(--gray-400);
}

.search-box svg {
    color: var(--gray-400);
}

/* Stats Container */
.stats-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    padding: 32px;
}

.stat-card {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 20px;
    transition: all 0.15s ease;
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--gray-300);
}

.stat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    font-size: 32px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.stat-footer {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
}

.stat-change {
    font-weight: 500;
    color: var(--gray-600);
}

.stat-change.positive {
    color: var(--success);
}

.stat-change.negative {
    color: var(--error);
}

.stat-period {
    color: var(--gray-500);
}

/* Cards */
.card {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    margin: 0 32px 24px;
    overflow: hidden;
}

.card-header {
    padding: 24px;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 4px;
}

.card-description {
    font-size: 14px;
    color: var(--gray-600);
}

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

.card-content {
    padding: 24px;
}

.card-content.no-padding {
    padding: 0;
}

/* Buttons */
.btn-primary,
.btn-secondary,
.btn-icon,
.btn-link {
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.15s ease;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
}

.btn-primary {
    background: var(--stripe-purple);
    color: white;
    padding: 10px 16px;
}

.btn-primary:hover {
    background: #5851df;
    box-shadow: var(--shadow);
}

.btn-secondary {
    background: white;
    color: var(--gray-700);
    padding: 10px 16px;
    border: 1px solid var(--gray-300);
}

.btn-secondary:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

.btn-secondary.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-icon,
.btn-icon-small {
    background: transparent;
    color: var(--gray-600);
    padding: 8px;
    border-radius: 6px;
}

.btn-icon:hover,
.btn-icon-small:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

.btn-icon-small {
    padding: 4px;
}

.btn-link {
    background: transparent;
    color: var(--stripe-purple);
    padding: 0;
    font-weight: 500;
}

.btn-link:hover {
    color: #5851df;
}

/* User Avatar */
.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--stripe-purple);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.user-avatar:hover {
    box-shadow: 0 0 0 4px rgba(99, 91, 255, 0.1);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-live {
    background: #E6F4EA;
    color: #137333;
}

.badge-test {
    background: #FEF3C7;
    color: #92400E;
}

/* API Keys */
.api-key-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: var(--gray-50);
    border-radius: var(--radius-sm);
}

.api-key-info {
    flex: 1;
}

.api-key-label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-700);
}

.api-key-value {
    display: block;
    font-family: 'SF Mono', 'Monaco', 'Courier New', monospace;
    font-size: 13px;
    color: var(--gray-900);
    background: transparent;
    padding: 0;
}

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

/* Code Block */
.code-block {
    background: var(--gray-900);
    border-radius: var(--radius);
    overflow: hidden;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.code-tabs {
    display: flex;
    gap: 2px;
}

.code-tab {
    background: transparent;
    border: none;
    color: var(--gray-400);
    padding: 6px 12px;
    font-size: 13px;
    font-weight: 500;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.code-tab:hover {
    color: white;
    background: rgba(255, 255, 255, 0.05);
}

.code-tab.active {
    color: white;
    background: rgba(255, 255, 255, 0.1);
}

.code-block pre {
    padding: 20px;
    overflow-x: auto;
}

.code-block code {
    font-family: 'SF Mono', 'Monaco', 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.6;
    color: #E5E7EB;
}

.code-keyword {
    color: #C792EA;
}

.code-string {
    color: #C3E88D;
}

.code-function {
    color: #82AAFF;
}

/* Table */
.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead th {
    text-align: left;
    padding: 12px 24px;
    font-size: 12px;
    font-weight: 600;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--gray-200);
    background: var(--gray-50);
}

tbody td {
    padding: 16px 24px;
    border-bottom: 1px solid var(--gray-200);
    color: var(--gray-900);
}

tbody tr:hover {
    background: var(--gray-50);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 64px 32px;
}

.empty-state-icon {
    margin: 0 auto 16px;
    width: 48px;
    height: 48px;
    color: var(--gray-300);
}

.empty-state h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 14px;
    color: var(--gray-600);
    margin-bottom: 24px;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
}

.modal-container {
    position: relative;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
}

.modal-header {
    padding: 24px;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-900);
}

.modal-content {
    padding: 24px;
    overflow-y: auto;
    max-height: calc(90vh - 150px);
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--gray-200);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    background: var(--gray-50);
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.form-label .optional {
    color: var(--gray-500);
    font-weight: 400;
}

.form-input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--gray-900);
    transition: all 0.15s ease;
    font-family: inherit;
}

.form-input:focus {
    outline: none;
    border-color: var(--stripe-purple);
    box-shadow: 0 0 0 3px rgba(99, 91, 255, 0.1);
}

.form-hint {
    font-size: 13px;
    color: var(--gray-500);
    margin-top: 6px;
}

.input-with-addon {
    position: relative;
}

.input-with-addon .form-input {
    padding-right: 60px;
}

.input-addon {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-600);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 16px 20px;
    box-shadow: var(--shadow-lg);
    min-width: 300px;
    animation: slideIn 0.3s ease;
    z-index: 1001;
}

.toast::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--success);
    border-radius: var(--radius) 0 0 var(--radius);
}

@keyframes slideIn {
    from {
        transform: translateY(100px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* View padding (for non-home views that don't use stats-container) */
.view-padding {
    padding: 32px;
}

.view-padding .card {
    margin: 0 0 24px;
}

/* Balance display */
.balance-display {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 24px;
}

.balance-amount {
    font-size: 48px;
    font-weight: 600;
    color: var(--gray-900);
}

.balance-currency {
    font-size: 18px;
    font-weight: 500;
    color: var(--gray-500);
}

.balance-details {
    border-top: 1px solid var(--gray-200);
    padding-top: 16px;
}

.balance-detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
}

.balance-detail-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-600);
}

.balance-detail-value {
    font-size: 13px;
    color: var(--gray-900);
}

/* Method badges for API reference */
.method-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 700;
    font-family: 'SF Mono', 'Monaco', 'Courier New', monospace;
    letter-spacing: 0.5px;
}

.method-get {
    background: #E6F4EA;
    color: #137333;
}

.method-post {
    background: #E3F2FD;
    color: #1565C0;
}

/* Empty state for full page placeholder views */
.empty-state-page {
    text-align: center;
    padding: 120px 32px;
}

.empty-state-page .empty-state-icon {
    margin: 0 auto 16px;
    width: 48px;
    height: 48px;
    color: var(--gray-300);
}

.empty-state-page h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.empty-state-page p {
    font-size: 14px;
    color: var(--gray-600);
}

/* Utilities */
.hidden {
    display: none !important;
}

/* Responsive */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .main-content {
        margin-left: 0;
    }

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

@media (max-width: 640px) {
    .topbar {
        padding: 16px;
    }

    .search-box {
        width: 200px;
    }

    .stats-container {
        grid-template-columns: 1fr;
        padding: 16px;
    }

    .card {
        margin: 0 16px 16px;
    }

    .card-header {
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
    }

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