@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@200..800&display=swap');

:root {
    --primary-bg: #0a0a0a;
    --secondary-bg: #121212;
    --tertiary-bg: #1a1a1a;
    --primary-text: #e0e0e0;
    --secondary-text: #a0a0a0;
    --border-color: #2c2c2c;
    --hover-bg-color: #222222;
    --active-bg-color: #333333;
    --accent-color: #ffffff;
    --button-bg: var(--accent-color);
    --button-text: var(--primary-bg);
    --button-hover-bg: #e0e0e0;

    --sidebar-width: 260px;
    --sidebar-collapsed-width: 70px;
    --header-height: 70px;
    --border-radius: 12px;
    --card-border-radius: 16px;
    --button-border-radius: 8px;
    --transition-speed: 0.25s;
    --transition-function: cubic-bezier(0.16, 1, 0.3, 1);
    --box-shadow-light: 0 2px 8px rgba(0, 0, 0, 0.3);
    --box-shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.4);
    --box-shadow-deep: 0 8px 32px rgba(0, 0, 0, 0.5);

    --color-tokens: rgb(96, 102, 94);
    --color-images: rgb(97, 113, 120);
    --color-embeddings: rgb(168, 181, 169);
    --color-speech: rgb(120, 120, 120);
    --color-transcriptions: rgb(140, 140, 140);
    --color-moderations: rgb(100, 100, 100);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    overscroll-behavior: none;
    font-family: 'Manrope', sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html {
    scrollbar-width: none;
}

::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--secondary-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

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

::selection {
    background: rgba(255, 255, 255, 0.15);
    color: var(--primary-text);
}

body {
    background: var(--primary-bg);
    color: var(--primary-text);
    line-height: 1.6;
    overflow-x: hidden;
    font-size: 15px;
    min-height: 100vh;
    -ms-overflow-style: none;
}

#app {
    display: flex;
    min-height: 100vh;
    position: relative;
}

.sidebar {
    width: var(--sidebar-width);
    background: var(--secondary-bg);
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-speed) var(--transition-function),
                width var(--transition-speed) var(--transition-function);
    overflow: hidden;
    position: fixed;
    height: 100vh;
    z-index: 1000;
    box-shadow: var(--box-shadow-medium);
    border-right: 1px solid var(--border-color);
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

.sidebar.collapsed .logo span,
.sidebar.collapsed .nav-item span,
.sidebar.collapsed .user-info,
.sidebar.collapsed .dropdown-icon {
    opacity: 0;
    visibility: hidden;
    width: 0;
    pointer-events: none;
}

.sidebar.collapsed .nav-item i {
    margin-right: 0;
}

.sidebar.collapsed .user-profile {
    justify-content: center;
}

.sidebar.collapsed .avatar {
    margin-right: 0;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    height: var(--header-height);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--accent-color);
    letter-spacing: -0.5px;
}

.logo span {
    transition: opacity 0.15s ease-out, visibility 0.15s ease-out;
}

.collapse-button {
    background: none;
    border: none;
    color: var(--secondary-text);
    cursor: pointer;
    font-size: 1rem;
    transition: color var(--transition-speed), transform var(--transition-speed);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.collapse-button:hover {
    color: var(--accent-color);
    background-color: var(--hover-bg-color);
}

.sidebar-nav {
    flex: 1;
    padding: 15px 0;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    overflow-x: hidden;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: var(--secondary-text);
    cursor: pointer;
    transition: all var(--transition-speed) var(--transition-function);
    margin: 2px 10px;
    border-radius: var(--border-radius);
    white-space: nowrap;
}

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

.nav-item.active {
    background: var(--active-bg-color);
    color: var(--accent-color);
    font-weight: 600;
}

.nav-item i {
    width: 20px;
    margin-right: 15px;
    text-align: center;
    font-size: 1rem;
    transition: margin-right var(--transition-speed) var(--transition-function);
}

.nav-item span {
    transition: opacity 0.15s ease-out, visibility 0.15s ease-out;
    overflow: hidden;
}

.sidebar-footer {
    padding: 15px 0;
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
}

.user-profile {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    cursor: pointer;
    position: relative;
    margin: 4px 10px;
    border-radius: var(--border-radius);
    transition: background-color var(--transition-speed) var(--transition-function);
    white-space: nowrap;
}

.user-profile:hover {
    background-color: var(--hover-bg-color);
}

.avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--tertiary-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 12px;
    font-weight: 600;
    color: var(--accent-color);
    overflow: hidden;
    flex-shrink: 0;
    transition: margin-right var(--transition-speed) var(--transition-function);
    border: 2px solid var(--border-color);
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.user-info {
    flex: 1;
    overflow: hidden;
    transition: opacity 0.15s ease-out;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.user-name {
    font-weight: 600;
    color: var(--primary-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 0.9rem;
}

.user-tier {
    font-size: 0.75rem;
    color: var(--secondary-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.dropdown-icon {
    margin-left: 8px;
    font-size: 0.8rem;
    color: var(--secondary-text);
    transition: transform var(--transition-speed) var(--transition-function), opacity 0.15s ease-out;
}

.dropdown-icon.rotate-icon {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    bottom: calc(100% + 10px);
    left: 0;
    right: auto;
    width: 200px;
    background-color: var(--tertiary-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-deep);
    z-index: 1001;
    overflow: hidden;
    border: 1px solid var(--border-color);
    animation: fadeInUp 0.2s ease-out;
}

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

.dropdown-item {
    padding: 12px 16px;
    transition: background-color var(--transition-speed) var(--transition-function);
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    color: var(--secondary-text);
    font-size: 0.9rem;
}

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

.dropdown-item i {
    width: 18px;
    text-align: center;
}

.sidebar-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.sidebar-backdrop.active {
    opacity: 1;
    visibility: visible;
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 30px;
    transition: margin-left var(--transition-speed) var(--transition-function);
    overflow-y: auto;
    height: 100vh;
}

.sidebar.collapsed ~ .main-content {
    margin-left: var(--sidebar-collapsed-width);
}

.page-header {
    margin-bottom: 32px;
}

.page-header-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 20px;
    flex-wrap: wrap;
}

.page-header h1 {
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: -1px;
    color: var(--accent-color);
    margin-bottom: 6px;
}

.page-subtitle {
    color: var(--secondary-text);
    font-size: 0.95rem;
    margin: 0;
}

.header-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

.balance-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    background: linear-gradient(135deg, var(--tertiary-bg), var(--secondary-bg));
    border: 1px solid var(--border-color);
    border-radius: 50px;
    transition: all var(--transition-speed);
}

.balance-card:hover {
    border-color: var(--accent-color);
    box-shadow: var(--box-shadow-light);
}

.balance-info-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.balance-info {
    display: flex;
    flex-direction: column;
}

.balance-value {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent-color);
}

.top-up-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent-color);
    color: var(--primary-bg);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-speed);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.top-up-btn:hover {
    background: var(--button-hover-bg);
    box-shadow: var(--box-shadow-light);
}

.create-key-btn {
    padding: 12px 20px;
    background: var(--accent-color);
    color: var(--primary-bg);
    border: none;
    border-radius: var(--button-border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed);
    display: flex;
    align-items: center;
    gap: 8px;
}

.create-key-btn:hover {
    background: var(--button-hover-bg);
    box-shadow: var(--box-shadow-medium);
}

.quick-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.quick-stat-card {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--card-border-radius);
    padding: 20px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    transition: background-color var(--transition-speed), border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.quick-stat-card:hover {
    background: var(--hover-bg-color);
    border-color: var(--accent-color);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.05);
}

.quick-stat-icon {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.quick-stat-icon.tokens {
    background: rgba(96, 102, 94, 0.15);
    color: var(--color-tokens);
}

.quick-stat-icon.images {
    background: rgba(97, 113, 120, 0.15);
    color: var(--color-images);
}

.quick-stat-icon.spending {
    background: rgba(168, 181, 169, 0.15);
    color: var(--color-embeddings);
}

.quick-stat-icon.plan {
    background: rgba(255, 255, 255, 0.05);
    color: var(--accent-color);
}

.quick-stat-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
}

.quick-stat-label {
    font-size: 0.8rem;
    color: var(--secondary-text);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.quick-stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-text);
    line-height: 1;
}

.quick-stat-change {
    font-size: 0.85rem;
    color: var(--secondary-text);
}

.section-header {
    margin: 40px 0 24px 0;
}

.section-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-text);
    display: flex;
    align-items: center;
    gap: 12px;
}

.section-header i {
    color: var(--accent-color);
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.summary-card {
    background: var(--tertiary-bg);
    border: 1px solid transparent;
    border-radius: var(--card-border-radius);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    transition: background-color var(--transition-speed), border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.summary-card:hover {
    background-color: var(--hover-bg-color);
    border-color: var(--border-color);
    box-shadow: inset 0 0 15px rgba(255, 255, 255, 0.05);
}

.summary-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
}

.summary-card-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.summary-card-icon.tokens { background: rgba(96, 102, 94, 0.15); color: var(--color-tokens); }
.summary-card-icon.images { background: rgba(97, 113, 120, 0.15); color: var(--color-images); }
.summary-card-icon.embeddings { background: rgba(168, 181, 169, 0.15); color: var(--color-embeddings); }
.summary-card-icon.speech { background: rgba(120, 120, 120, 0.15); color: var(--color-speech); }
.summary-card-icon.transcriptions { background: rgba(140, 140, 140, 0.15); color: var(--color-transcriptions); }
.summary-card-icon.moderations { background: rgba(100, 100, 100, 0.15); color: var(--color-moderations); }

.summary-card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-text);
}

.summary-card-body {
    margin-top: auto;
}

.detail-card .summary-card-body {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.detail-stat-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}

.detail-stat-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.detail-stat-row span:first-child {
    color: var(--secondary-text);
}

.detail-stat-row span:last-child {
    font-weight: 600;
    color: var(--primary-text);
}

.detail-stat-row.total {
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
    margin-top: 4px;
}

.detail-stat-row.total span {
    font-weight: 700;
    color: var(--accent-color);
    font-size: 1rem;
}

.analytics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.analytics-card {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--card-border-radius);
    padding: 24px;
    transition: all var(--transition-speed);
}

.analytics-card:hover {
    border-color: var(--accent-color);
    box-shadow: var(--box-shadow-light);
}

.analytics-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-text);
    margin: 0 0 20px 0;
    text-align: center;
}

.chart-wrapper {
    height: 300px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

canvas {
    max-width: 100%;
    max-height: 100%;
}

.empty-analytics {
    margin-bottom: 40px;
}

.empty-state {
    background: var(--secondary-bg);
    border: 2px dashed var(--border-color);
    border-radius: var(--card-border-radius);
    padding: 60px 40px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.empty-state i {
    font-size: 4rem;
    color: var(--secondary-text);
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--primary-text);
    margin: 0;
}

.empty-state p {
    color: var(--secondary-text);
    margin: 0;
}

.cta-button {
    padding: 12px 24px;
    background: var(--accent-color);
    color: var(--primary-bg);
    border: none;
    border-radius: var(--button-border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
}

.cta-button:hover {
    background: var(--button-hover-bg);
    box-shadow: var(--box-shadow-medium);
}

.model-selector {
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.model-selector label {
    font-weight: 600;
    color: var(--primary-text);
}

.model-selector select {
    padding: 10px 40px 10px 14px;
    border-radius: var(--border-radius);
    background-color: var(--tertiary-bg);
    color: var(--primary-text);
    border: 1px solid var(--border-color);
    transition: all var(--transition-speed);
    font-size: 0.95rem;
    min-width: 250px;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23a0a0a0' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14L2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: calc(100% - 12px) center;
}

.model-selector select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
}

.playground {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    height: calc(100vh - 220px);
    min-height: 500px;
}

.input-panel, .output-panel {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--card-border-radius);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.panel-header {
    padding: 16px 20px;
    background: var(--tertiary-bg);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    color: var(--primary-text);
    display: flex;
    align-items: center;
    gap: 10px;
}

.input-panel textarea {
    flex: 1;
    background: var(--secondary-bg);
    color: var(--primary-text);
    border: none;
    padding: 20px;
    font-family: 'Manrope', sans-serif;
    font-size: 0.95rem;
    line-height: 1.6;
    resize: none;
}

.input-panel textarea:focus {
    outline: none;
}

.run-button {
    margin: 16px 20px 20px 20px;
    padding: 12px 24px;
    background: var(--accent-color);
    color: var(--primary-bg);
    border: none;
    border-radius: var(--button-border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.run-button:hover:not(:disabled) {
    background: var(--button-hover-bg);
    box-shadow: var(--box-shadow-medium);
}

.run-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--tertiary-bg);
    color: var(--secondary-text);
}

.output-content {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    position: relative;
}

.model-response {
    white-space: pre-wrap;
    word-wrap: break-word;
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--primary-text);
}

.model-response strong {
    font-weight: 700;
    color: var(--accent-color);
}

.model-response em {
    font-style: italic;
}

.model-response code {
    background: var(--tertiary-bg);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
}

.model-response pre {
    background: var(--tertiary-bg);
    padding: 16px;
    border-radius: var(--border-radius);
    overflow-x: auto;
    margin: 12px 0;
}

.model-response pre code {
    background: none;
    padding: 0;
}

.model-image-response {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
}

.model-image-response img {
    max-width: 100%;
    max-height: 100%;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-medium);
}

.placeholder-text {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    gap: 12px;
    color: var(--secondary-text);
}

.placeholder-text i {
    font-size: 3rem;
    opacity: 0.3;
}

.billing-section {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--card-border-radius);
    padding: 32px;
    margin-bottom: 24px;
}

.billing-section h2 {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--primary-text);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.billing-description {
    color: var(--secondary-text);
    margin-bottom: 24px;
    line-height: 1.6;
}

.crypto-addresses {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 32px;
}

.crypto-item {
    background: var(--tertiary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 16px;
    transition: all var(--transition-speed);
}

.crypto-item:hover {
    border-color: var(--accent-color);
}

.crypto-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.crypto-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}

.crypto-icon.usdt {
    background: rgba(38, 161, 123, 0.15);
    color: rgb(38, 161, 123);
}

.crypto-icon.btc {
    background: rgba(247, 147, 26, 0.15);
    color: rgb(247, 147, 26);
}

.crypto-icon.ton {
    background: rgba(0, 136, 204, 0.15);
    color: rgb(0, 136, 204);
}

.crypto-icon.eth {
    background: rgba(98, 126, 234, 0.15);
    color: rgb(98, 126, 234);
}

.crypto-info {
    display: flex;
    flex-direction: column;
}

.crypto-name {
    font-weight: 600;
    color: var(--primary-text);
    font-size: 0.95rem;
}

.crypto-network {
    font-size: 0.75rem;
    color: var(--secondary-text);
    text-transform: uppercase;
}

.crypto-address-box {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--primary-bg);
    padding: 10px 12px;
    border-radius: calc(var(--border-radius) - 4px);
    border: 1px solid var(--border-color);
}

.crypto-address {
    flex: 1;
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
    color: var(--secondary-text);
    word-break: break-all;
}

.copy-btn {
    padding: 8px 12px;
    background: var(--tertiary-bg);
    color: var(--accent-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-speed);
    flex-shrink: 0;
}

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

.copy-btn.copied {
    background: rgba(40, 167, 69, 0.2);
    color: #28a745;
    border-color: #28a745;
}

.payment-verification {
    border-top: 1px solid var(--border-color);
    padding-top: 32px;
    margin-top: 32px;
}

.verification-form {
    max-width: 500px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--primary-text);
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-group small {
    display: block;
    margin-top: 6px;
    color: var(--secondary-text);
    font-size: 0.85rem;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    background: var(--tertiary-bg);
    color: var(--primary-text);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    transition: all var(--transition-speed);
}

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

.submit-btn {
    padding: 12px 24px;
    background: var(--accent-color);
    color: var(--primary-bg);
    border: none;
    border-radius: var(--button-border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.submit-btn:hover:not(:disabled) {
    background: var(--button-hover-bg);
    box-shadow: var(--box-shadow-medium);
}

.submit-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.contact-support {
    margin-top: 24px;
    padding: 20px;
    background: var(--tertiary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-support i {
    font-size: 1.5rem;
    color: var(--accent-color);
    flex-shrink: 0;
}

.contact-support strong {
    display: block;
    color: var(--primary-text);
    margin-bottom: 4px;
}

.contact-support p {
    color: var(--secondary-text);
    margin: 0;
}

.contact-support a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
}

.contact-support a:hover {
    text-decoration: underline;
}

.keys-table {
    width: 100%;
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--card-border-radius);
    overflow: hidden;
}

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

.keys-table thead {
    background: var(--tertiary-bg);
}

.keys-table th {
    padding: 16px 20px;
    text-align: left;
    font-weight: 600;
    color: var(--primary-text);
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.keys-table td {
    padding: 16px 20px;
    color: var(--primary-text);
    border-bottom: 1px solid var(--border-color);
}

.keys-table tbody tr:last-child td {
    border-bottom: none;
}

.keys-table tbody tr:hover {
    background: var(--hover-bg-color);
}

.key-name-cell {
    display: flex;
    align-items: center;
    gap: 12px;
}

.key-icon-small {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-color);
    flex-shrink: 0;
}

.key-preview-code {
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    color: var(--secondary-text);
}

.key-actions {
    display: flex;
    justify-content: flex-end;
}

.delete-btn {
    padding: 8px 16px;
    background: transparent;
    color: var(--secondary-text);
    border: 1px solid var(--border-color);
    border-radius: var(--button-border-radius);
    cursor: pointer;
    transition: all var(--transition-speed);
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
}

.delete-btn:hover:not(:disabled) {
    background: rgba(220, 53, 69, 0.1);
    color: #dc3545;
    border-color: #dc3545;
}

.delete-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 20px;
    animation: fadeIn 0.2s ease-out;
}

.modal-box {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--card-border-radius);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--box-shadow-deep);
    animation: slideUp 0.3s var(--transition-function);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { transform: translateY(30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-header {
    padding: 24px 28px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header.success {
    background: linear-gradient(135deg, rgba(40, 167, 69, 0.1), transparent);
    border-bottom-color: rgba(40, 167, 69, 0.3);
}

.modal-header h2 {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--primary-text);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.modal-close {
    background: none;
    border: none;
    color: var(--secondary-text);
    font-size: 1.3rem;
    cursor: pointer;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-speed);
}

.modal-close:hover {
    background: var(--hover-bg-color);
    color: var(--primary-text);
}

.modal-body {
    padding: 24px 28px;
}

.modal-footer {
    padding: 16px 28px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.btn-primary, .btn-secondary {
    padding: 10px 20px;
    border: none;
    border-radius: var(--button-border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed);
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--button-hover-bg);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-secondary {
    background: var(--tertiary-bg);
    color: var(--primary-text);
    border: 1px solid var(--border-color);
}

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

.top-up-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.amount-btn {
    padding: 16px;
    background: var(--tertiary-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-speed);
    text-align: center;
    font-weight: 600;
    color: var(--primary-text);
}

.amount-btn:hover {
    border-color: var(--accent-color);
    background: var(--hover-bg-color);
}

.custom-amount-section {
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

.success-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.key-name-display {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--tertiary-bg);
    border-radius: var(--border-radius);
    font-weight: 600;
    color: var(--primary-text);
}

.key-display-box {
    background: var(--tertiary-bg);
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.key-display-box code {
    flex: 1;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    color: var(--accent-color);
    word-break: break-all;
}

.copy-btn-large {
    padding: 10px 16px;
    background: var(--accent-color);
    color: var(--primary-bg);
    border: none;
    border-radius: var(--button-border-radius);
    cursor: pointer;
    transition: all var(--transition-speed);
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
    flex-shrink: 0;
}

.copy-btn-large:hover {
    background: var(--button-hover-bg);
    transform: scale(1.05);
}

.copy-btn-large.copied {
    background: #28a745;
}

.warning-box {
    background: rgba(255, 193, 7, 0.1);
    border: 1px solid rgba(255, 193, 7, 0.3);
    border-radius: var(--border-radius);
    padding: 16px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.warning-box i {
    color: #ffc107;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.warning-box strong {
    display: block;
    color: var(--primary-text);
    margin-bottom: 4px;
}

.warning-box p {
    color: var(--secondary-text);
    margin: 0;
    font-size: 0.9rem;
}

.profile-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.profile-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--tertiary-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-color);
    overflow: hidden;
    border: 3px solid var(--border-color);
    align-self: center;
}

.profile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-details {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.detail-row:last-child {
    border-bottom: none;
}

.detail-label {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--secondary-text);
    font-size: 0.9rem;
}

.detail-label i {
    width: 16px;
    text-align: center;
}

.detail-value {
    color: var(--primary-text);
    font-weight: 600;
}

.referral-link {
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
    word-break: break-all;
    text-align: right;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    border-top-color: var(--accent-color);
    animation: spin 0.8s linear infinite;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

@keyframes spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.error-message,
.success-message {
    padding: 14px 18px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    margin: 16px 0;
}

.error-message {
    background: rgba(220, 53, 69, 0.1);
    border: 1px solid rgba(220, 53, 69, 0.3);
    color: var(--primary-text);
}

.error-message i {
    color: #dc3545;
}

.success-message {
    background: rgba(40, 167, 69, 0.1);
    border: 1px solid rgba(40, 167, 69, 0.3);
    color: var(--primary-text);
}

.success-message i {
    color: #28a745;
}

.grecaptcha-badge {
    visibility: hidden;
}

.mobile-nav-toggle {
    display: none;
    position: fixed;
    top: 20px;
    left: 20px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--tertiary-bg);
    color: var(--accent-color);
    border: 1px solid var(--border-color);
    z-index: 1020;
    box-shadow: var(--box-shadow-medium);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-speed);
}

.mobile-nav-toggle:hover {
    background: var(--hover-bg-color);
    transform: scale(1.05);
}

@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
        width: 280px !important;
        z-index: 1010;
    }

    .sidebar.mobile-visible {
        transform: translateX(0);
    }

    .sidebar.collapsed {
        width: 280px !important;
    }

    .sidebar.collapsed .logo span,
    .sidebar.collapsed .nav-item span,
    .sidebar.collapsed .user-info,
    .sidebar.collapsed .dropdown-icon {
        opacity: 1;
        visibility: visible;
        width: auto;
    }

    .sidebar.collapsed .nav-item i {
        margin-right: 15px;
    }

    .main-content {
        margin-left: 0 !important;
        padding: 20px 16px;
    }

    .mobile-nav-toggle {
        display: flex;
    }

    .collapse-button {
        display: none;
    }

    .page-header h1 {
        font-size: 1.8rem;
        margin-top: 40px;
    }

    .page-header-content {
        flex-direction: column;
    }

    .header-actions {
        width: 100%;
    }

    .balance-card {
        flex: 1;
    }

    .quick-stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 16px;
    }

    .summary-grid {
        grid-template-columns: 1fr;
    }

    .analytics-grid {
        grid-template-columns: 1fr;
    }

    .playground {
        grid-template-columns: 1fr;
        height: auto;
        min-height: auto;
    }

    .input-panel,
    .output-panel {
        min-height: 400px;
    }

    .crypto-addresses {
        grid-template-columns: 1fr;
    }

    .top-up-options {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .quick-stats-grid {
        grid-template-columns: 1fr;
    }

    .crypto-addresses {
        grid-template-columns: 1fr;
    }

    .model-selector {
        flex-direction: column;
        align-items: stretch;
    }

    .model-selector select {
        width: 100%;
    }

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

    .keys-table table {
        min-width: 600px;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: 16px 12px;
    }

    .page-header h1 {
        font-size: 1.6rem;
    }

    .billing-section {
        padding: 20px;
    }

    .modal-box {
        max-width: 100%;
        margin: 10px;
    }

    .modal-header,
    .modal-body,
    .modal-footer {
        padding: 20px;
    }

    .top-up-options {
        grid-template-columns: 1fr;
    }
}