/* Telegram-style Theme Variables */
:root {
    /* Light Theme (default) */
    --tg-theme-bg-color: #ffffff;
    --tg-theme-secondary-bg-color: #f4f4f5;
    --tg-theme-text-color: #000000;
    --tg-theme-hint-color: #707579;
    --tg-theme-link-color: #3390ec;
    --tg-theme-button-color: #3390ec;
    --tg-theme-button-text-color: #ffffff;
    --tg-theme-destructive-color: #e53935;
    --tg-theme-header-bg-color: #f4f4f5;
    --tg-theme-section-bg-color: #f4f4f5;
    --tg-theme-content-bg-color: #ffffff;
    --tg-theme-section-header-text-color: #707579;
    --tg-theme-subtitle-text-color: #707579;
    --tg-theme-accent-text-color: #3390ec;
    --tg-theme-section-separator-color: #e7e7e7;
    --tg-theme-bottom-bar-bg-color: #f4f4f5;

    /* Shadows and effects */
    --tg-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    --tg-shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.15);
    --tg-border-radius: 12px;
    --tg-border-radius-sm: 8px;
    --tg-transition: all 0.2s ease;
}

/* Dark Theme */
[data-theme="dark"] {
    --tg-theme-bg-color: #212121;
    --tg-theme-secondary-bg-color: #0f0f0f;
    --tg-theme-text-color: #ffffff;
    --tg-theme-hint-color: #aaaaaa;
    --tg-theme-link-color: #5ebbff;
    --tg-theme-button-color: #3390ec;
    --tg-theme-button-text-color: #ffffff;
    --tg-theme-destructive-color: #ff6b6b;
    --tg-theme-header-bg-color: #181818;
    --tg-theme-section-bg-color: #181818;
    --tg-theme-content-bg-color: #212121;
    --tg-theme-section-header-text-color: #aaaaaa;
    --tg-theme-subtitle-text-color: #aaaaaa;
    --tg-theme-accent-text-color: #5ebbff;
    --tg-theme-section-separator-color: #303030;
    --tg-theme-bottom-bar-bg-color: #181818;

    --tg-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    --tg-shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.4);
}

/* Base styles */
*, *::before, *::after {
    box-sizing: border-box;
}

html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--tg-theme-secondary-bg-color);
    color: var(--tg-theme-text-color);
    margin: 0;
    padding: 0;
    height: 100%;
    transition: var(--tg-transition);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html {
    height: 100vh;
    overflow: hidden;
}

h1:focus {
    outline: none;
}

a, .btn-link {
    color: var(--tg-theme-link-color);
    text-decoration: none;
    transition: var(--tg-transition);
}

a:hover, .btn-link:hover {
    opacity: 0.8;
}

/* Telegram-style Buttons */
.tg-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 600;
    border: none;
    border-radius: var(--tg-border-radius);
    cursor: pointer;
    transition: var(--tg-transition);
    text-decoration: none;
}

.tg-button-primary {
    background-color: var(--tg-theme-button-color);
    color: var(--tg-theme-button-text-color);
}

.tg-button-primary:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
}

.tg-button-secondary {
    background-color: transparent;
    color: var(--tg-theme-button-color);
    border: 1.5px solid var(--tg-theme-button-color);
}

.tg-button-secondary:hover {
    background-color: var(--tg-theme-button-color);
    color: var(--tg-theme-button-text-color);
}

.tg-button-danger {
    background-color: var(--tg-theme-destructive-color);
    color: #ffffff;
}

.tg-button-danger:hover {
    filter: brightness(1.1);
}

/* Disabled state */
.tg-button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
    transform: none;
}

.tg-button-block {
    width: 100%;
}

/* На десктопе кнопки не растягиваются на всю ширину */
@media (min-width: 769px) {
    .tg-button-block {
        width: auto;
        min-width: 200px;
    }

    .action-buttons {
        flex-direction: row !important;
        justify-content: center;
    }
}

/* Telegram-style Cards */
.tg-card {
    background-color: var(--tg-theme-section-bg-color);
    border-radius: var(--tg-border-radius);
    padding: 16px;
    margin-bottom: 12px;
    box-shadow: var(--tg-shadow);
    transition: var(--tg-transition);
}

.tg-card:hover {
    box-shadow: var(--tg-shadow-lg);
}

.tg-card-header {
    font-size: 13px;
    font-weight: 500;
    color: var(--tg-theme-section-header-text-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

/* Telegram-style List */
.tg-list {
    background-color: var(--tg-theme-section-bg-color);
    border-radius: var(--tg-border-radius);
    overflow: hidden;
    box-shadow: var(--tg-shadow);
}

.tg-list-item {
    display: flex;
    align-items: center;
    padding: 14px 16px;
    border-bottom: 1px solid var(--tg-theme-section-separator-color);
    transition: var(--tg-transition);
    cursor: pointer;
    text-decoration: none;
    color: var(--tg-theme-text-color);
}

.tg-list-item:last-child {
    border-bottom: none;
}

.tg-list-item:hover {
    background-color: var(--tg-theme-secondary-bg-color);
}

.tg-list-item-icon {
    width: 24px;
    height: 24px;
    margin-right: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--tg-theme-hint-color);
}

.tg-list-item-content {
    flex: 1;
}

.tg-list-item-title {
    font-size: 16px;
    font-weight: 400;
}

.tg-list-item-subtitle {
    font-size: 14px;
    color: var(--tg-theme-subtitle-text-color);
    margin-top: 2px;
}

.tg-list-item-chevron {
    color: var(--tg-theme-hint-color);
    margin-left: 8px;
}

/* Telegram-style Section */
.tg-section {
    padding: 0 16px;
    margin-bottom: 24px;
}

.tg-section-header {
    font-size: 13px;
    font-weight: 500;
    color: var(--tg-theme-section-header-text-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 8px 16px;
    margin-bottom: 4px;
}

/* Telegram-style Input */
.tg-input {
    width: 100%;
    padding: 14px 16px;
    font-size: 16px;
    border: none;
    border-radius: var(--tg-border-radius);
    background-color: var(--tg-theme-section-bg-color);
    color: var(--tg-theme-text-color);
    outline: none;
    transition: var(--tg-transition);
    box-shadow: var(--tg-shadow);
}

.tg-input:focus {
    box-shadow: 0 0 0 2px var(--tg-theme-button-color);
}

.tg-input::placeholder {
    color: var(--tg-theme-hint-color);
}

/* Telegram-style Toggle/Switch */
.tg-toggle {
    position: relative;
    width: 51px;
    height: 31px;
    cursor: pointer;
}

.tg-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.tg-toggle-slider {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--tg-theme-section-separator-color);
    border-radius: 31px;
    transition: var(--tg-transition);
}

.tg-toggle-slider::before {
    content: '';
    position: absolute;
    width: 27px;
    height: 27px;
    left: 2px;
    bottom: 2px;
    background-color: #ffffff;
    border-radius: 50%;
    transition: var(--tg-transition);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.tg-toggle input:checked + .tg-toggle-slider {
    background-color: var(--tg-theme-button-color);
}

.tg-toggle input:checked + .tg-toggle-slider::before {
    transform: translateX(20px);
}

/* Theme toggle specific */
.theme-toggle-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.theme-toggle-icon {
    font-size: 20px;
}

/* Alert styles */
.tg-alert {
    padding: 14px 16px;
    border-radius: var(--tg-border-radius);
    margin-bottom: 12px;
    font-size: 14px;
}

.tg-alert-success {
    background-color: rgba(76, 175, 80, 0.15);
    color: #4caf50;
    border: 1px solid rgba(76, 175, 80, 0.3);
}

.tg-alert-error {
    background-color: rgba(229, 57, 53, 0.15);
    color: var(--tg-theme-destructive-color);
    border: 1px solid rgba(229, 57, 53, 0.3);
}

.tg-alert-info {
    background-color: rgba(51, 144, 236, 0.15);
    color: var(--tg-theme-button-color);
    border: 1px solid rgba(51, 144, 236, 0.3);
}

/* Page container */
.tg-page {
    min-height: 100vh;
}

.tg-page-content {
    padding: 16px;
    max-width: 100%;
}

/* Header */
.tg-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--tg-theme-header-bg-color);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--tg-shadow);
}

.tg-header-title {
    font-size: 17px;
    font-weight: 600;
    color: var(--tg-theme-text-color);
}

/* Bottom Navigation */
.tg-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--tg-theme-bottom-bar-bg-color);
    display: flex;
    justify-content: space-around;
    padding: 8px 0;
    padding-bottom: max(8px, env(safe-area-inset-bottom));
    box-shadow: 0 -1px 3px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.tg-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 8px 16px;
    color: var(--tg-theme-hint-color);
    text-decoration: none;
    transition: var(--tg-transition);
    border-radius: var(--tg-border-radius-sm);
    min-width: 64px;
}

.tg-nav-item:hover {
    background-color: var(--tg-theme-secondary-bg-color);
}

.tg-nav-item.active {
    color: var(--tg-theme-button-color);
}

.tg-nav-icon {
    font-size: 24px;
    margin-bottom: 4px;
}

.tg-nav-label {
    font-size: 11px;
    font-weight: 500;
}

/* Empty state */
.tg-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    text-align: center;
}

.tg-empty-icon {
    font-size: 64px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.tg-empty-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.tg-empty-text {
    font-size: 14px;
    color: var(--tg-theme-hint-color);
    max-width: 280px;
}

/* Hero section */
.tg-hero {
    text-align: center;
    padding: 32px 24px;
}

.tg-hero-icon {
    font-size: 64px;
    margin-bottom: 16px;
}

.tg-hero-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--tg-theme-text-color);
}

.tg-hero-subtitle {
    font-size: 16px;
    color: var(--tg-theme-hint-color);
    margin-bottom: 24px;
}

/* Badge */
.tg-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 12px;
    background-color: var(--tg-theme-button-color);
    color: var(--tg-theme-button-text-color);
}

.tg-badge-secondary {
    background-color: var(--tg-theme-secondary-bg-color);
    color: var(--tg-theme-hint-color);
}

/* Spinner */
.tg-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--tg-theme-section-separator-color);
    border-top-color: var(--tg-theme-button-color);
    border-radius: 50%;
    animation: tg-spin 0.8s linear infinite;
}

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

/* Form validation */
.valid.modified:not([type=checkbox]) {
    outline: none;
    box-shadow: 0 0 0 2px rgba(76, 175, 80, 0.5);
}

.invalid {
    outline: none;
    box-shadow: 0 0 0 2px rgba(229, 57, 53, 0.5);
}

.validation-message {
    color: var(--tg-theme-destructive-color);
    font-size: 13px;
    margin-top: 4px;
}

/* Blazor error UI */
#blazor-error-ui {
    background: var(--tg-theme-destructive-color);
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
    color: white;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 0.75rem;
    top: 0.5rem;
}

.blazor-error-boundary {
    background: var(--tg-theme-destructive-color);
    padding: 1rem;
    color: white;
    border-radius: var(--tg-border-radius);
}

.blazor-error-boundary::after {
    content: "Произошла ошибка.";
}

/* Loading progress */
.loading-progress {
    position: relative;
    display: block;
    width: 8rem;
    height: 8rem;
    margin: 20vh auto 1rem auto;
}

.loading-progress circle {
    fill: none;
    stroke: var(--tg-theme-section-separator-color);
    stroke-width: 0.6rem;
    transform-origin: 50% 50%;
    transform: rotate(-90deg);
}

.loading-progress circle:last-child {
    stroke: var(--tg-theme-button-color);
    stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
    transition: stroke-dasharray 0.05s ease-in-out;
}

/* Auth pages (login, register) - narrow container */
.auth-page {
    max-width: 480px;
    margin: 0 auto;
}

@media (min-width: 1200px) {
    .auth-page {
        max-width: 520px;
    }
}

/* Utility classes */
.text-hint { color: var(--tg-theme-hint-color); }
.text-accent { color: var(--tg-theme-accent-text-color); }
.text-center { text-align: center; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.gap-2 { gap: 16px; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }