:root {
    --tg-blue: #3390ec;
    --tg-blue-hover: #2b7fd4;
    --tg-blue-active: #2481d4;
    --tg-bg: #ffffff;
    --tg-page-bg: #ffffff;
    --tg-text: #000000;
    --tg-text-secondary: #707579;
    --tg-border: #dfe1e5;
    --tg-input-bg: #f4f4f5;
    --tg-input-focus: #e8f4fd;
    --tg-radius: 12px;
    --tg-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

body {
    font-family: var(--tg-font);
    background-color: var(--tg-page-bg);
    color: var(--tg-text);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    -webkit-font-smoothing: antialiased;
}

.auth-page {
    width: 100%;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 24px 16px;
}

.auth-card {
    width: 100%;
    max-width: 360px;
    text-align: center;
    animation: fadeIn 0.35s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.auth-logo {
    margin-bottom: 24px;
}

.auth-logo img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
}

.auth-logo--emoji img {
    width: 160px;
    height: 160px;
    border-radius: 0;
}

.auth-title {
    font-size: 28px;
    font-weight: 500;
    line-height: 1.2;
    margin-bottom: 8px;
    color: var(--tg-text);
}

.auth-subtitle {
    font-size: 15px;
    line-height: 1.45;
    color: var(--tg-text-secondary);
    margin-bottom: 28px;
    padding: 0 8px;
}

.auth-form {
    text-align: left;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--tg-text-secondary);
    margin-bottom: 6px;
    padding-left: 2px;
}

select,
input[type="text"],
input[type="tel"],
input[type="password"] {
    width: 100%;
    height: 48px;
    padding: 0 14px;
    font-size: 16px;
    font-family: var(--tg-font);
    color: var(--tg-text);
    background-color: var(--tg-input-bg);
    border: 1px solid transparent;
    border-radius: var(--tg-radius);
    outline: none;
    transition: background-color 0.15s, border-color 0.15s, box-shadow 0.15s;
    appearance: none;
    -webkit-appearance: none;
}

select:focus,
input[type="text"]:focus,
input[type="tel"]:focus,
input[type="password"]:focus {
    background-color: var(--tg-input-focus);
    border-color: var(--tg-blue);
    box-shadow: 0 0 0 1px var(--tg-blue);
}

#country {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23707579' d='M1.41 0L6 4.58 10.59 0 12 1.41l-6 6-6-6z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}

#country option {
    background-color: #fff;
    color: var(--tg-text);
}

/* Custom country picker with flag images */
.country-picker {
    position: relative;
}

.country-picker__trigger {
    width: 100%;
    height: 48px;
    padding: 0 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-family: var(--tg-font);
    color: var(--tg-text);
    background-color: var(--tg-input-bg);
    border: 1px solid transparent;
    border-radius: var(--tg-radius);
    cursor: pointer;
    transition: background-color 0.15s, border-color 0.15s, box-shadow 0.15s;
}

.country-picker__trigger:hover {
    background-color: #ececed;
}

.country-picker.is-open .country-picker__trigger,
.country-picker__trigger:focus {
    background-color: var(--tg-input-focus);
    border-color: var(--tg-blue);
    box-shadow: 0 0 0 1px var(--tg-blue);
    outline: none;
}

.country-picker__flag {
    width: 24px;
    height: 18px;
    object-fit: cover;
    border-radius: 2px;
    flex-shrink: 0;
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.08);
}

.country-picker__label {
    flex: 1;
    text-align: left;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.country-picker__code {
    color: var(--tg-text-secondary);
    font-size: 15px;
    flex-shrink: 0;
}

.country-picker__chevron {
    flex-shrink: 0;
    transition: transform 0.2s;
}

.country-picker.is-open .country-picker__chevron {
    transform: rotate(180deg);
}

.country-picker__dropdown {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    background: #fff;
    border: 1px solid var(--tg-border);
    border-radius: var(--tg-radius);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    z-index: 100;
    overflow: hidden;
}

.country-picker__search {
    width: 100%;
    height: 44px;
    padding: 0 14px;
    font-size: 15px;
    border: none;
    border-bottom: 1px solid var(--tg-border);
    border-radius: 0;
    background: #fff;
    outline: none;
}

.country-picker__search:focus {
    background: #fff;
    box-shadow: none;
    border-color: var(--tg-border);
}

.country-picker__list {
    list-style: none;
    max-height: 240px;
    overflow-y: auto;
    margin: 0;
    padding: 4px 0;
}

.country-picker__item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    cursor: pointer;
    transition: background-color 0.12s;
}

.country-picker__item:hover {
    background-color: var(--tg-input-bg);
}

.country-picker__item-flag {
    width: 24px;
    height: 18px;
    object-fit: cover;
    border-radius: 2px;
    flex-shrink: 0;
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.08);
}

.country-picker__item-name {
    flex: 1;
    font-size: 15px;
    text-align: left;
}

.country-picker__item-code {
    font-size: 14px;
    color: var(--tg-text-secondary);
    flex-shrink: 0;
}

.country-picker__empty {
    padding: 16px 14px;
    text-align: center;
    color: var(--tg-text-secondary);
    font-size: 14px;
}

.country-picker__list::-webkit-scrollbar {
    width: 6px;
}

.country-picker__list::-webkit-scrollbar-thumb {
    background: #c4c4c4;
    border-radius: 3px;
}

.phone-field {
    display: flex;
    align-items: stretch;
    background-color: var(--tg-input-bg);
    border: 1px solid transparent;
    border-radius: var(--tg-radius);
    overflow: hidden;
    transition: background-color 0.15s, border-color 0.15s, box-shadow 0.15s;
}

.phone-field:focus-within {
    background-color: var(--tg-input-focus);
    border-color: var(--tg-blue);
    box-shadow: 0 0 0 1px var(--tg-blue);
}

.phone-field .country-code {
    display: flex;
    align-items: center;
    padding: 0 12px 0 14px;
    font-size: 16px;
    color: var(--tg-text);
    font-weight: 500;
    white-space: nowrap;
    border-right: 1px solid var(--tg-border);
    background: transparent;
}

.phone-field input {
    border: none;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    flex: 1;
    min-width: 0;
}

.phone-field input:focus {
    background: transparent;
    border: none;
    box-shadow: none;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 20px 0 24px;
    cursor: pointer;
    font-size: 14px;
    color: var(--tg-text);
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--tg-blue);
    cursor: pointer;
    flex-shrink: 0;
}

.btn-primary {
    width: 100%;
    height: 52px;
    padding: 0 24px;
    font-size: 16px;
    font-weight: 500;
    font-family: var(--tg-font);
    color: #fff;
    background-color: var(--tg-blue);
    border: none;
    border-radius: var(--tg-radius);
    cursor: pointer;
    transition: background-color 0.15s, transform 0.1s;
}

.btn-primary:hover {
    background-color: var(--tg-blue-hover);
}

.btn-primary:active {
    background-color: var(--tg-blue-active);
    transform: scale(0.98);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.auth-link {
    display: inline-block;
    margin-top: 20px;
    font-size: 14px;
    color: var(--tg-blue);
    text-decoration: none;
    cursor: pointer;
}

.auth-link:hover {
    text-decoration: underline;
}

.code-input {
    text-align: center;
    font-size: 24px;
    letter-spacing: 8px;
    font-weight: 500;
}

.password-field input {
    letter-spacing: 2px;
}

.auth-hint {
    font-size: 13px;
    color: var(--tg-text-secondary);
    margin-top: -8px;
    margin-bottom: 16px;
    padding-left: 2px;
}

/* Legacy container class support */
.container {
    width: 100%;
    max-width: 360px;
    text-align: center;
}

/* Popup */
.popup {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.4);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 999;
}

.popup-content {
    background-color: #fff;
    padding: 24px;
    border-radius: 16px;
    text-align: center;
    width: 90%;
    max-width: 320px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}

.popup h2 {
    margin-bottom: 10px;
    font-size: 20px;
}

.popup p {
    margin-top: 0;
    color: var(--tg-text-secondary);
}

/* Loading spinner */
.loading-spinner {
    border: 3px solid #f4f4f5;
    border-top: 3px solid var(--tg-blue);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 0.8s linear infinite;
    position: fixed;
    top: 50%;
    left: 50%;
    margin-top: -20px;
    margin-left: -20px;
    z-index: 9999;
}

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

@media (max-width: 480px) {
    .auth-title {
        font-size: 24px;
    }

    .auth-logo img {
        width: 100px;
        height: 100px;
    }

    .auth-logo--emoji img {
        width: 140px;
        height: 140px;
    }
}