/* === LOGIN PAGE === */
.header-simple {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}

.back-link {
    color: #666;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.back-link:hover {
    color: #FF6B6B;
}

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    box-sizing: border-box;
}

.login-container {
    max-width: 480px;
    width: 100%;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
    overflow: hidden;
    margin: 0 auto;
}

.login-tabs {
    display: flex;
    background: #f8f9fa;
    border-radius: 20px 20px 0 0;
}

.tab-btn {
    flex: 1;
    padding: 20px;
    border: none;
    background: none;
    font-size: 16px;
    font-weight: 600;
    color: #666;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn.active {
    background: white;
    color: #FF6B6B;
    border-radius: 20px 20px 0 0;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
}

.login-form {
    padding: 40px;
    display: none;
}

.login-form.active {
    display: block;
}

.login-form h2 {
    margin-bottom: 30px;
    font-size: 28px;
    font-weight: 700;
    color: #333;
    text-align: center;
}

.form-group {
    position: relative;
    margin-bottom: 25px;
}

.form-group input {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid #e9ecef;
    border-radius: 12px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: #f8f9fa;
    box-sizing: border-box;
}

.form-group input:focus {
    outline: none;
    border-color: #FF6B6B;
    background: white;
    box-shadow: 0 0 0 3px rgba(255, 107, 107, 0.1);
}

.form-group label {
    position: absolute;
    left: 20px;
    top: 16px;
    color: #999;
    pointer-events: none;
    transition: all 0.3s ease;
    font-size: 16px;
}

.form-group input:focus + label,
.form-group input:valid + label {
    top: -10px;
    left: 12px;
    font-size: 12px;
    color: #FF6B6B;
    background: white;
    padding: 0 6px;
}

.form-links {
    text-align: center;
    margin-top: 20px;
}

.forgot-password {
    color: #FF6B6B;
    text-decoration: none;
    font-size: 14px;
}

.forgot-password:hover {
    text-decoration: underline;
}

/* Сообщения об ошибках/успехе */
.message {
    padding: 12px 16px;
    margin-bottom: 20px;
    border-radius: 8px;
    font-size: 14px;
    display: none;
    text-align: center;
    font-weight: 500;
    box-sizing: border-box;
    width: 100%;
}

.message-success {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    color: #155724;
    border: 1px solid #c3e6cb;
    animation: slideIn 0.3s ease;
}

.message-error {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    color: #721c24;
    border: 1px solid #f5c6cb;
    animation: slideIn 0.3s ease;
}

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

/* === АДАПТИВНОСТЬ === */
@media (max-width: 768px) {
    .login-page {
        padding: 40px 16px;
    }

    .login-container {
        max-width: 100%;
    }

    .login-form {
        padding: 30px 24px;
    }

    .login-form h2 {
        font-size: 24px;
        margin-bottom: 24px;
    }

    .tab-btn {
        padding: 16px;
        font-size: 15px;
    }

    .form-group input {
        padding: 14px 16px;
        font-size: 15px;
    }

    .form-group label {
        left: 16px;
        top: 14px;
        font-size: 15px;
    }

    .form-group input:focus + label,
    .form-group input:valid + label {
        left: 10px;
        top: -8px;
        font-size: 11px;
    }

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

@media (max-width: 480px) {
    .login-page {
        padding: 20px 12px;
        align-items: flex-start;
        padding-top: 40px;
    }

    .login-container {
        border-radius: 16px;
    }

    .login-tabs {
        border-radius: 16px 16px 0 0;
    }

    .tab-btn.active {
        border-radius: 16px 16px 0 0;
    }

    .login-form {
        padding: 24px 16px;
    }

    .login-form h2 {
        font-size: 22px;
        margin-bottom: 20px;
    }

    .tab-btn {
        padding: 14px;
        font-size: 14px;
    }

    .form-group input {
        padding: 12px 14px;
        font-size: 16px;
        border-radius: 10px;
    }

    .form-group label {
        left: 14px;
        top: 12px;
        font-size: 16px;
    }

    .form-group input:focus + label,
    .form-group input:valid + label {
        left: 8px;
        top: -8px;
        font-size: 11px;
    }

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

    .forgot-password {
        font-size: 13px;
    }

    .message {
        font-size: 13px;
        padding: 10px 12px;
    }
}

@media (max-width: 360px) {
    .login-page {
        padding: 16px 10px;
        padding-top: 30px;
    }

    .login-form {
        padding: 20px 14px;
    }

    .login-form h2 {
        font-size: 20px;
    }

    .tab-btn {
        padding: 12px;
        font-size: 13px;
    }

    .form-group input {
        padding: 11px 12px;
        font-size: 15px;
    }

    .form-group label {
        left: 12px;
        top: 11px;
        font-size: 15px;
    }
}