:root {
    --tg-theme-bg-color: #ffffff;
    --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-secondary-bg-color: #f4f4f5;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: var(--tg-theme-bg-color);
    color: var(--tg-theme-text-color);
    line-height: 1.6;
    padding: 16px;
    padding-bottom: 80px;
}

.container {
    max-width: 600px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 24px;
    padding: 20px 0;
}

header h1 {
    font-size: 28px;
    margin-bottom: 8px;
    font-weight: 700;
}

.subtitle {
    color: var(--tg-theme-hint-color);
    font-size: 14px;
}

.card {
    background: var(--tg-theme-secondary-bg-color);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.status-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 16px 20px;
}

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

.status-icon {
    font-size: 32px;
}

.status-text {
    font-size: 18px;
    font-weight: 600;
}

.card h2 {
    font-size: 20px;
    margin-bottom: 20px;
    font-weight: 600;
}

.card h3 {
    font-size: 16px;
    margin-top: 24px;
    margin-bottom: 16px;
    font-weight: 600;
    color: var(--tg-theme-hint-color);
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 14px;
}

.input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    font-family: inherit;
    background: var(--tg-theme-bg-color);
    color: var(--tg-theme-text-color);
    transition: border-color 0.3s;
}

.input:focus {
    outline: none;
    border-color: var(--tg-theme-button-color);
}

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

select.input {
    cursor: pointer;
    appearance: none;
    background-image: url('data:image/svg+xml;charset=UTF-8,<svg xmlns="http://www.w3.org/2000/svg" width="12" height="8"><path fill="%23707579" d="M6 8L0 0h12z"/></svg>');
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.toggle-password {
    position: absolute;
    right: 12px;
    top: 38px;
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.2s;
}

.toggle-password:hover {
    opacity: 1;
}

.hint {
    font-size: 12px;
    color: var(--tg-theme-hint-color);
    margin-top: 4px;
}

.telegram-config {
    margin-top: 20px;
}

.info-card {
    background: #e8f5e9;
    border-left: 4px solid #4caf50;
}

.info-card h3 {
    color: #2e7d32;
    margin-top: 0;
}

.info-list {
    list-style: none;
    padding-left: 0;
}

.info-list li {
    padding: 8px 0;
    padding-left: 24px;
    position: relative;
}

.info-list li:before {
    content: "→";
    position: absolute;
    left: 0;
    color: #4caf50;
    font-weight: bold;
}

.button-group {
    display: flex;
    gap: 12px;
    margin-top: 24px;
    position: fixed;
    bottom: 16px;
    left: 16px;
    right: 16px;
    max-width: 568px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    flex: 1;
    padding: 14px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    font-family: inherit;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: var(--tg-theme-button-color);
    color: var(--tg-theme-button-text-color);
    box-shadow: 0 4px 12px rgba(51, 144, 236, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 6px 16px rgba(51, 144, 236, 0.4);
}

.btn-secondary {
    background: var(--tg-theme-secondary-bg-color);
    color: var(--tg-theme-text-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.btn-secondary:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.loading {
    text-align: center;
    padding: 40px 20px;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--tg-theme-secondary-bg-color);
    border-top-color: var(--tg-theme-button-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
}

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

.message {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    border-radius: 12px;
    margin-top: 20px;
}

.message .icon {
    font-size: 32px;
    flex-shrink: 0;
}

.message .text {
    flex: 1;
}

.message .text strong {
    display: block;
    font-size: 16px;
    margin-bottom: 4px;
}

.message .text p {
    font-size: 14px;
    color: var(--tg-theme-hint-color);
}

.success {
    background: #e8f5e9;
    border: 2px solid #4caf50;
}

.error {
    background: #ffebee;
    border: 2px solid #f44336;
}

.hidden {
    display: none !important;
}

/* Dark theme support */
@media (prefers-color-scheme: dark) {
    :root {
        --tg-theme-bg-color: #212121;
        --tg-theme-text-color: #ffffff;
        --tg-theme-hint-color: #aaaaaa;
        --tg-theme-secondary-bg-color: #181818;
    }

    .card {
        box-shadow: 0 1px 3px rgba(255, 255, 255, 0.05);
    }

    .input {
        border-color: #444444;
    }

    .info-card {
        background: #1b5e20;
        border-left-color: #4caf50;
    }

    .info-card h3 {
        color: #81c784;
    }

    .success {
        background: #1b5e20;
        border-color: #4caf50;
    }

    .error {
        background: #b71c1c;
        border-color: #f44336;
    }
}

/* Animation for elements */
.card {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}