:root {
    --bg: #0a0e14;
    --surface: #131820;
    --border: #1e2736;
    --text: #e0e4eb;
    --text-secondary: #8895a9;
    --accent: #4d8af0;
    --accent-hover: #3a6fd8;
    --error-bg: rgba(220, 53, 69, 0.12);
    --error-border: rgba(220, 53, 69, 0.35);
    --error-text: #f4878f;
    --input-bg: #1a1f2b;
    --radius: 10px;
    --transition: 0.2s ease;
    --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background-image:
        radial-gradient(ellipse at 30% 20%, rgba(77, 138, 240, 0.06) 0%, transparent 60%),
        radial-gradient(ellipse at 70% 80%, rgba(77, 138, 240, 0.04) 0%, transparent 60%),
        radial-gradient(ellipse at 50% 50%, rgba(77, 138, 240, 0.02) 0%, transparent 80%);
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    background-size: 40px 40px;
}

.container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 420px;
}

.lang-switcher {
    display: flex;
    gap: 4px;
    justify-content: center;
    margin-bottom: 28px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 50px;
    padding: 4px;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.lang-btn {
    padding: 8px 18px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition);
    white-space: nowrap;
    letter-spacing: 0.01em;
    font-family: var(--font);
}

.lang-btn:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.04);
}

.lang-btn.active {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 2px 8px rgba(77, 138, 240, 0.3);
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px 32px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px);
}

.icon-wrapper {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.shield-icon {
    width: 52px;
    height: 52px;
    background: rgba(77, 138, 240, 0.1);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.shield-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--accent);
    fill: none;
    stroke-width: 1.8;
}

.title {
    text-align: center;
    font-size: 1.45rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 6px;
    line-height: 1.3;
}

.subtitle {
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 28px;
    line-height: 1.5;
}

.badge {
    display: inline-block;
    background: rgba(77, 138, 240, 0.1);
    color: var(--accent);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 5px 12px;
    border-radius: 50px;
    letter-spacing: 0.02em;
    margin-top: 2px;
}

.form-group {
    margin-bottom: 18px;
}

.form-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.form-input {
    width: 100%;
    padding: 12px 14px;
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 0.95rem;
    font-family: var(--font);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}

.form-input::placeholder {
    color: #4a5568;
}

.form-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(77, 138, 240, 0.1);
}

.submit-btn {
    width: 100%;
    padding: 12px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    font-family: var(--font);
    letter-spacing: 0.01em;
    margin-top: 6px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.submit-btn:hover:not(:disabled) {
    background: var(--accent-hover);
    box-shadow: 0 4px 16px rgba(77, 138, 240, 0.3);
    transform: translateY(-1px);
}

.submit-btn:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(77, 138, 240, 0.2);
}

.submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Простой индикатор загрузки внутри кнопки */
.btn-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin-right: 8px;
}

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

.error-message {
    display: none;
    align-items: center;
    gap: 10px;
    margin-top: 16px;
    padding: 12px 16px;
    background: var(--error-bg);
    border: 1px solid var(--error-border);
    border-radius: var(--radius);
    color: var(--error-text);
    font-size: 0.88rem;
    font-weight: 500;
    animation: fadeIn 0.25s ease;
}

.error-message.visible {
    display: flex;
}

.error-message svg {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    stroke: var(--error-text);
    fill: none;
    stroke-width: 2;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.launch-info {
    text-align: center;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.82rem;
    line-height: 1.6;
}

.launch-info strong {
    color: var(--text);
}

@media (max-width: 480px) {
    .card {
        padding: 28px 20px;
    }
    .title {
        font-size: 1.25rem;
    }
    .lang-btn {
        padding: 7px 14px;
        font-size: 0.8rem;
    }
}